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Passage: The rise of behavioral economics has fundamentally challenged the classical economic assumption that individuals act as perfectly rational agents who maximize utility. Researchers such as Kahneman and Tversky demonstrated through systematic experiments that human decision-making is riddled with cognitive biases — mental shortcuts that often lead to predictable errors. Loss aversion, for example, causes individuals to weight potential losses roughly twice as heavily as equivalent gains, leading to risk-averse choices that a purely rational actor would never make. Anchoring bias causes people to rely disproportionately on the first piece of information they encounter, even when that information is irrelevant to the decision at hand. The primary purpose of this passage is to:

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Passage: The rise of behavioral economics has fundamentally challenged the classical economic assumption that individuals act as perfectly rational agents who maximize utility. Researchers such as Kahneman and Tversky demonstrated through systematic experiments that human decision-making is riddled with cognitive biases — mental shortcuts that often lead to predictable errors. Loss aversion, for example, causes individuals to weight potential losses roughly twice as heavily as equivalent gains, leading to risk-averse choices that a purely rational actor would never make. Anchoring bias causes people to rely disproportionately on the first piece of information they encounter, even when that information is irrelevant to the decision at hand. According to the passage, anchoring bias occurs when a person:

Reading Comprehension

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Passage: The rise of behavioral economics has fundamentally challenged the classical economic assumption that individuals act as perfectly rational agents who maximize utility. Researchers such as Kahneman and Tversky demonstrated through systematic experiments that human decision-making is riddled with cognitive biases — mental shortcuts that often lead to predictable errors. Loss aversion, for example, causes individuals to weight potential losses roughly twice as heavily as equivalent gains, leading to risk-averse choices that a purely rational actor would never make. Anchoring bias causes people to rely disproportionately on the first piece of information they encounter, even when that information is irrelevant to the decision at hand. The author's tone in this passage can best be described as:

Reading Comprehension

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Passage: Throughout the nineteenth century, historians largely treated history as a narrative of great men and pivotal political events. The 'history from above' model emphasized the actions of kings, generals, and statesmen as the primary engines of historical change. By the mid-twentieth century, however, social historians began shifting focus toward the experiences of ordinary people — workers, women, and marginalized communities. This 'history from below' approach drew on demographic data, court records, and oral histories to reconstruct everyday life. Critics of the new social history argued that it fragmented the coherent narrative that gave history its explanatory power, while proponents countered that such narratives had merely disguised whose experiences were deemed worthy of remembering. The passage implies that proponents of 'history from below' would most likely agree with which of the following statements?

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Passage: Throughout the nineteenth century, historians largely treated history as a narrative of great men and pivotal political events. The 'history from above' model emphasized the actions of kings, generals, and statesmen as the primary engines of historical change. By the mid-twentieth century, however, social historians began shifting focus toward the experiences of ordinary people — workers, women, and marginalized communities. This 'history from below' approach drew on demographic data, court records, and oral histories to reconstruct everyday life. Critics of the new social history argued that it fragmented the coherent narrative that gave history its explanatory power, while proponents countered that such narratives had merely disguised whose experiences were deemed worthy of remembering. Which of the following best describes the structure of this passage?

Reading Comprehension

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Passage: Photosynthesis in C4 plants differs markedly from the process in C3 plants. In C3 plants, carbon dioxide is fixed directly by the enzyme RuBisCO in the mesophyll cells; however, RuBisCO also catalyzes a competing reaction with oxygen — photorespiration — that wastes fixed carbon and reduces efficiency. C4 plants have evolved a biochemical 'carbon pump': they first fix CO₂ in mesophyll cells using the enzyme PEP carboxylase, which has a much higher affinity for CO₂ than RuBisCO and does not react with oxygen. The concentrated CO₂ is then shuttled to bundle sheath cells where RuBisCO operates in a high-CO₂ environment, effectively suppressing photorespiration. As a result, C4 plants such as corn and sugarcane show higher photosynthetic efficiency, particularly in hot, dry climates. According to the passage, C4 plants suppress photorespiration primarily by:

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Passage: Photosynthesis in C4 plants differs markedly from the process in C3 plants. In C3 plants, carbon dioxide is fixed directly by the enzyme RuBisCO in the mesophyll cells; however, RuBisCO also catalyzes a competing reaction with oxygen — photorespiration — that wastes fixed carbon and reduces efficiency. C4 plants have evolved a biochemical 'carbon pump': they first fix CO₂ in mesophyll cells using the enzyme PEP carboxylase, which has a much higher affinity for CO₂ than RuBisCO and does not react with oxygen. The concentrated CO₂ is then shuttled to bundle sheath cells where RuBisCO operates in a high-CO₂ environment, effectively suppressing photorespiration. As a result, C4 plants such as corn and sugarcane show higher photosynthetic efficiency, particularly in hot, dry climates. It can be inferred from the passage that photorespiration is most problematic for plants in environments where:

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Passage: Urban heat islands (UHIs) occur when cities experience higher temperatures than their surrounding rural areas. The primary drivers of UHIs include the replacement of natural vegetation with impervious surfaces such as asphalt and concrete, which absorb and retain more solar radiation than soil and plants. Additionally, waste heat from vehicles, air conditioning units, and industrial processes contributes to elevated temperatures. Studies show that UHIs can raise city temperatures by 1–7°C above surrounding areas. Policy responses have included green roofing programs, urban forestry initiatives, and the use of high-albedo ('cool') pavements that reflect more solar radiation. Critics of cool pavements, however, note that they can increase glare and may redirect heat rather than eliminate it, potentially warming adjacent buildings. The passage most strongly suggests that critics of cool pavements are concerned that:

Reading Comprehension

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Passage: Urban heat islands (UHIs) occur when cities experience higher temperatures than their surrounding rural areas. The primary drivers of UHIs include the replacement of natural vegetation with impervious surfaces such as asphalt and concrete, which absorb and retain more solar radiation than soil and plants. Additionally, waste heat from vehicles, air conditioning units, and industrial processes contributes to elevated temperatures. Studies show that UHIs can raise city temperatures by 1–7°C above surrounding areas. Policy responses have included green roofing programs, urban forestry initiatives, and the use of high-albedo ('cool') pavements that reflect more solar radiation. Critics of cool pavements, however, note that they can increase glare and may redirect heat rather than eliminate it, potentially warming adjacent buildings. Which of the following best describes how the last sentence functions in the passage?

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Passage: The concept of 'creative destruction,' coined by economist Joseph Schumpeter, describes the process by which innovation continuously disrupts existing economic structures. New technologies and business models displace older ones, destroying jobs and industries while simultaneously creating new forms of economic activity. Schumpeter viewed this cycle as the defining characteristic of capitalism — an inherently unstable but dynamically productive system. Critics argue that creative destruction imposes disproportionate costs on workers and communities that lack the resources to adapt, and that the benefits of new industries often accrue to capital owners rather than to those displaced. Proponents counter that historically, economies have always generated new employment over time, even if transition periods are painful. The passage indicates that proponents of creative destruction would most likely respond to critics by arguing that:

Reading Comprehension

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Argument: The city of Merton recently hired a consulting firm to study commuter traffic. The firm found that roads in Merton have 15% more vehicles per lane-mile than they did a decade ago. City officials concluded that congestion has worsened significantly and that expanding highway capacity is the most effective solution. Which of the following, if true, most seriously weakens the city officials' conclusion that expanding highway capacity is the most effective solution?

Critical Reasoning

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Argument: The Fairview School Board is debating whether to extend the school day by one hour. Proponents argue the extra hour will improve student outcomes. However, a recent survey showed that 78% of Fairview students already feel stressed by their current workload. Therefore, extending the school day would likely increase student stress to harmful levels. Which of the following, if true, most strengthens the argument that extending the school day would increase stress to harmful levels?

Critical Reasoning

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Argument: In the small town of Clearwater, the number of serious car accidents at the intersection of Oak and Main streets increased by 40% this year compared to last year. The town engineer proposes installing a traffic light at the intersection. A local business owner opposes the proposal, arguing that the increase is explained by the unusually icy winter this year. If the business owner's explanation is correct, which of the following conclusions can be most reasonably drawn?

Critical Reasoning

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Argument: A study of 500 marathon runners found that those who trained using high-intensity interval training (HIIT) finished races 8 minutes faster on average than those who trained exclusively with long, slow distance runs. The researchers concluded that HIIT is more effective than traditional training methods for marathon performance. Which of the following, if true, most strengthens the researchers' conclusion?

Critical Reasoning

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Argument: The nation of Verada recently enacted a law banning single-use plastic bags at retail stores. Proponents claimed the ban would significantly reduce plastic pollution in Verada's rivers and coastlines. However, in the two years since the ban, plastic pollution levels in Verada's waterways have not decreased. Which of the following, if true, best explains the discrepancy between the expected and actual outcomes of the plastic bag ban?

Critical Reasoning

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Argument: Researchers studying language acquisition noted that bilingual children in a community performed better on executive function tests — tests of attention, working memory, and cognitive flexibility — than monolingual children of the same age. The researchers argued that managing two languages simultaneously exercises and improves executive function. In boldface: The first sentence presents OBSERVATIONAL EVIDENCE and the second sentence presents the RESEARCHERS' CAUSAL EXPLANATION. Which of the following best describes the roles of the two boldface portions?

Critical Reasoning

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Passage: The field of epigenetics studies heritable changes in gene expression that do not involve alterations to the underlying DNA sequence. Environmental exposures — including diet, stress, and toxins — can attach chemical 'tags' to DNA or its associated proteins, switching genes on or off without changing the genetic code itself. Critically, some of these epigenetic changes can be passed from parent to offspring, suggesting that acquired characteristics may be transmitted across generations in ways that classic Mendelian genetics does not account for. This finding has revived scholarly interest in Lamarckian inheritance, a theory largely discredited after Darwin's work established natural selection as the primary mechanism of evolution. The passage suggests that epigenetics findings are historically significant primarily because they:

Reading Comprehension

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Passage: The field of epigenetics studies heritable changes in gene expression that do not involve alterations to the underlying DNA sequence. Environmental exposures — including diet, stress, and toxins — can attach chemical 'tags' to DNA or its associated proteins, switching genes on or off without changing the genetic code itself. Critically, some of these epigenetic changes can be passed from parent to offspring, suggesting that acquired characteristics may be transmitted across generations in ways that classic Mendelian genetics does not account for. This finding has revived scholarly interest in Lamarckian inheritance, a theory largely discredited after Darwin's work established natural selection as the primary mechanism of evolution. Which of the following best characterizes the relationship between the last sentence and the rest of the passage?

Reading Comprehension

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Passage: Corporate governance scholars have long debated whether independent boards — boards dominated by outside directors without operational ties to the company — produce better firm performance. The theoretical case for independence rests on the idea that outside directors, free from managerial influence, can more objectively monitor executives and protect shareholder interests. Empirical evidence, however, has been mixed. Some studies find that independent boards are associated with lower rates of financial misconduct and higher long-term shareholder returns. Others find that outside directors, lacking intimate operational knowledge, are less effective at providing the strategic guidance that improves performance. A third strand of research suggests board composition matters less than board culture and the quality of individual directors. The primary purpose of this passage is to:

Reading Comprehension

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Passage: Corporate governance scholars have long debated whether independent boards — boards dominated by outside directors without operational ties to the company — produce better firm performance. The theoretical case for independence rests on the idea that outside directors, free from managerial influence, can more objectively monitor executives and protect shareholder interests. Empirical evidence, however, has been mixed. Some studies find that independent boards are associated with lower rates of financial misconduct and higher long-term shareholder returns. Others find that outside directors, lacking intimate operational knowledge, are less effective at providing the strategic guidance that improves performance. A third strand of research suggests board composition matters less than board culture and the quality of individual directors. According to the passage, which of the following is a potential disadvantage of outside directors on corporate boards?

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Passage: Microfinance — the provision of small loans and financial services to low-income individuals — was championed in the 1990s and 2000s as a powerful tool for poverty alleviation. Proponents argued that access to credit would allow the poor to invest in small businesses, smooth consumption across periods of income volatility, and escape poverty traps. Rigorous randomized controlled trial (RCT) evidence from multiple countries in the 2010s, however, found only modest and heterogeneous effects. Households that accessed microloans did not reliably increase income or move out of poverty at higher rates than control groups. Critics of the RCT findings argue that the studies measured impacts over too short a time horizon to capture transformative effects that accrue over decades. The author's attitude toward the RCT evidence can best be described as:

Reading Comprehension

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Passage: Microfinance — the provision of small loans and financial services to low-income individuals — was championed in the 1990s and 2000s as a powerful tool for poverty alleviation. Proponents argued that access to credit would allow the poor to invest in small businesses, smooth consumption across periods of income volatility, and escape poverty traps. Rigorous randomized controlled trial (RCT) evidence from multiple countries in the 2010s, however, found only modest and heterogeneous effects. Households that accessed microloans did not reliably increase income or move out of poverty at higher rates than control groups. Critics of the RCT findings argue that the studies measured impacts over too short a time horizon to capture transformative effects that accrue over decades. Which of the following best describes what the critics of the RCT evidence would argue needs to happen before microfinance can be fairly evaluated?

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Argument: Greenpoint City has experienced a sharp rise in rates of childhood obesity over the past decade. During this same period, the number of fast food restaurants in Greenpoint has tripled. A public health advocacy group concluded that the proliferation of fast food restaurants caused the increase in childhood obesity. Which of the following, if true, most seriously weakens the advocacy group's conclusion?

Critical Reasoning

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Argument: A technology company recently launched a new smartphone model priced $200 higher than its predecessor. Despite the higher price, early sales data show units sold in the first month exceeded those of the predecessor's first-month launch by 35%. The CEO concluded that the higher price is not deterring consumers and that the company's premium strategy is succeeding. Which of the following, if true, would most call into question the CEO's conclusion?

Critical Reasoning

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Argument: Residents of the coastal town of Port Arbor have observed that the local fishing catch has declined sharply over the past three years. During the same period, the number of boats operated by commercial fishing fleets has doubled. The town council concluded that overfishing by commercial fleets is responsible for the catch decline. Which of the following, if true, most seriously undermines the town council's conclusion?

Critical Reasoning

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Argument: Several prominent economists have warned that rising national debt levels will inevitably lead to hyperinflation. As evidence, they cite examples from 20th-century economies such as Zimbabwe and Weimar Germany. Critics of this view note that Japan has maintained a debt-to-GDP ratio exceeding 200% for decades without experiencing hyperinflation. Which of the following can be most properly inferred from the argument above?

Critical Reasoning

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