All practice questions

Passage A
Observational astronomy has firmly established that the visible mass in galaxies cannot account for their rotational speeds. The most scientifically robust explanation posits a halo of dark matter—specifically, weakly interacting massive particles (WIMPs). While these particles have thus far eluded direct detection, the dark matter paradigm coheres elegantly with standard cosmological models, explaining not just galactic rotation but also gravitational lensing and the cosmic microwave background. Positing entirely new physics, as some theorists suggest, upends foundational physical laws merely to avoid hypothesizing an undetectable particle—a theoretical cure far worse than the observational disease.

Passage B
For decades, the astrophysical community has operated under the assumption that "dark matter" must exist to rescue Newtonian dynamics at the galactic scale. Yet millions of dollars and countless experiments have failed to produce a single dark matter particle. It is time to seriously consider an alternative: the laws of gravity themselves may require modification at extremely low accelerations. Modified Newtonian Dynamics (MOND) predicts the exact rotational behavior of galaxies without the need for invisible, undetectable matter. While MOND faces challenges in explaining cosmic microwave background fluctuations, clinging to an unfalsifiable particle hypothesis reflects a stagnation of scientific philosophy. Adopting modified gravity offers a more empirically grounded path forward than continuing a fruitless hunt for phantoms.

Based on the passages, match each proposition below to the correct description of the authors' stances toward it.

Based on the two passages below, match the following claims made by the author of Passage A (Left) to how the author of Passage B would most likely evaluate or respond to them (Right).

Passage A
The efficient market hypothesis (EMH) posits that financial markets process information with remarkable accuracy, such that asset prices continually reflect all available information. Critics increasingly point to psychological biases observed in laboratory settings—such as overconfidence or loss aversion—as evidence that individuals act irrationally. However, these individual idiosyncrasies do not necessarily translate to market-wide inefficiencies. In a liquid market, any significant deviation of an asset's price from its fundamental value creates an arbitrage opportunity. Rational, sophisticated investors will immediately exploit this mispricing, buying undervalued assets and selling overvalued ones. This mechanism drives prices back to equilibrium rapidly. Thus, while human psychology is undeniably complex and imperfect, the competitive structure of the market aggregates diverse behaviors into rational pricing. Anomalies, when they occur, are transient blips rather than structural failures. Models of market efficiency do not claim that every actor is perfectly rational at every moment, but rather that the market as an aggregate behaves as if they were. Attempting to regulate markets based on behavioral anomalies is therefore misguided; it risks stifling the very arbitrage mechanisms that ensure efficiency, introducing regulatory frictions that are far more damaging than temporary price deviations.

Passage B
Traditional financial theory relies heavily on the assumption of frictionless arbitrage, suggesting that 'smart money' will always correct the errors of irrational market participants. Yet, this theoretical construct ignores the practical limits to arbitrage. In reality, exploiting mispricing is inherently risky and costly. The noise trader approach to finance demonstrates that irrational investors, or 'noise traders,' can act in concert based on shared sentiment, driving prices further away from fundamental values. A rational arbitrageur attempting to correct this must have a long time horizon and deep pockets, as the mispricing could worsen before it corrects—a phenomenon famously summarized by the adage that markets can remain irrational longer than you can remain solvent. Consequently, behavioral biases are not merely individual quirks that wash out in the aggregate; they are systemic factors that can lead to persistent, substantial price distortions in real-world markets. Furthermore, the institutional structures of modern finance often exacerbate these limits. Fund managers, evaluated on short-term performance, are understandably reluctant to take contrarian positions against strong market trends, even if they recognize a bubble. This institutional herd behavior means that smart money often joins the noise traders rather than countering them. Thus, recognizing the persistent impact of behavioral factors is essential not just for academic modeling, but for regulators seeking to mitigate systemic financial vulnerabilities.

Match each paradoxical scenario with the underlying causal mechanism that most effectively resolves its apparent discrepancy.

Review the three argumentative statements provided below. Match each argument with the formal description that most accurately characterizes its central reasoning vulnerability.

Passage A
The bedrock of clinical ethics is patient autonomy and the corollary principle of medical confidentiality. When genetic testing reveals a mutation predisposing a patient to a severe, onset-delayed disease, physicians often face pressure to warn the patient’s at-risk relatives. However, breaching confidentiality without explicit consent fundamentally undermines the fiduciary nature of the doctor-patient relationship. Without the assurance of absolute privacy, individuals might forgo genetic testing altogether, paradoxically increasing overall harm. While the desire to prevent future suffering is commendable, a physician’s primary ethical obligation remains firmly tethered to the individual who sought their care. Only when an immediate, highly probable, and strictly preventable danger is present—a threshold genetic predispositions rarely meet—can the veil of confidentiality be ethically pierced.

Passage B
Traditional bioethics, rooted in an atomistic view of individual rights, struggles to accommodate the unique nature of genomic data. Genetic information is inherently shared; to diagnose one individual is often to probabilistically diagnose their biological relatives. Therefore, treating genetic test results strictly as private medical records ignores the biological reality of the familial unit. Physicians possess a duty of non-maleficence that extends beyond the immediate patient. When a patient refuses to disclose a preventable genetic risk to family members, the physician must weigh the breach of confidentiality against the potential for grave, avoidable harm. While consent should always be sought first, the ethical mandate to warn relatives—particularly when prophylactic interventions exist—should supersede absolute adherence to patient confidentiality.

Based on the two passages, match each proposition below to the most accurate description of how the authors of Passage A and Passage B would respond to it.

For each of the arguments below, match the argument to the unstated assumption that is strictly necessary for its conclusion to be logically justified.

Passage A
The long-standing debate over corporate criminal liability often falters on the misconception that a corporation is nothing more than the sum of its human parts. This reductionist view, however, fails to account for the reality of corporate culture and decision-making structures. A modern corporation possesses an internal identity and a decision-making apparatus that operates independently of any single individual's will. Consequently, a corporation can cultivate a reckless or fraudulent culture that transcends the actions of specific employees. Because the organization itself can manifest intent through its policies and institutional practices, it is entirely appropriate to subject the corporation, as a distinct moral and legal entity, to criminal condemnation and retribution. To do otherwise is to ignore the unique ontological status that organizations hold in contemporary society.

Passage B
Assigning criminal liability to corporations is an exercise in legal fiction that obscures the true nature of corporate wrongdoing. A corporate entity is essentially a nexus of contracts—a structural arrangement through which individuals collaborate to generate economic value. As an abstract legal construct, a corporation lacks a mind and, therefore, cannot possess *mens rea* (criminal intent) or moral culpability. When corporate misconduct occurs, it is invariably the result of decisions made by specific human agents. While civil penalties levied against the corporate entity can serve the pragmatic goal of deterring future misconduct by incentivizing shareholders to monitor management, prosecuting the corporation itself as a moral agent is fundamentally flawed. True justice requires identifying and punishing the culpable individuals rather than imposing retributive sanctions on an inanimate legal shell.

Based on the passages, match each of the following propositions to the statement that most accurately describes the authors' stances regarding that proposition.

Review the following four arguments and align each with the abstract description that most accurately identifies its primary logical vulnerability.

In logical argumentation, a conclusion depends upon implicit assumptions without which the stated premises fail to establish the claim. Match each of the following arguments to the necessary unstated assumption required for its conclusion to be logically valid.

Passage A
The advent of photography in the mid-nineteenth century is often heralded as the catalyst for the modernist revolution in painting. Prior to the camera, the painter's primary social mandate was largely documentary: recording likenesses, historical events, and topographical realities. Once the camera assumed this documentary burden, achieving precise mimetic representation with unprecedented speed and accuracy, painters were liberated from the constraints of strict realism. Free to abandon the imitation of nature, artists turned their attention inward, exploring the subjective experience of vision and the material properties of paint itself. This divergence gave rise to movements like Impressionism, where the fleeting effects of light superseded structural accuracy. In this view, photography and painting immediately established a mutually exclusive dichotomy: the former became the domain of objective record, while the latter retreated into subjective expression. The camera's mechanical nature was viewed by painters not as a rival artistic tool, but as an industrial technology that permanently stripped representational accuracy of its artistic aura. By relegating the replication of the physical world to a machine, painting was forced to redefine its fundamental purpose.

Passage B
The traditional narrative that photography cleanly severed painting from realistic representation oversimplifies the complex, symbiotic relationship between the two mediums during the late nineteenth century. Rather than a sudden divergence, the period witnessed a profound, structural cross-pollination. Many prominent painters surreptitiously utilized photographs as foundational sketches, relying on the camera's optical precision to solve complex compositional problems and capture fleeting poses that human models could not hold. Far from abandoning realism, these painters leveraged photographic accuracy to heighten the verisimilitude of their canvases, integrating the mechanical image into traditional academic workflows. Conversely, early art photographers actively resisted the categorization of their medium as merely mechanical or purely documentary. To elevate photography to the status of fine art, they employed techniques like soft focus, complex darkroom manipulation, and allegorical staging to consciously mimic the aesthetic conventions of traditional oil painting. The camera did not simply take over the documentary function and leave painters to abstraction; to argue that photography caused painting to abandon realism ignores the reality that many painters used the camera to achieve an even more meticulous finish. The boundary between the two art forms was highly porous and characterized by mutual imitation.

Based on the passages, match each claim made in Passage A with how the author of Passage B would most likely evaluate or respond to that claim.

Consider the argumentative excerpts below, each of which exhibits a specific vulnerability in its underlying logic. For each argument, select the description that identifies its primary reasoning flaw.

Read the following passage carefully. The author constructs an implicit thesis regarding the true nature and historical success of the transition to agriculture. Match each specific premise from the passage (Left Items) to the conceptual function it serves in constructing the author's overarching implicit argument (Right Items).

The advent of agriculture has long been romanticized as a watershed moment of human intellectual triumph. Conventional wisdom dictates that the deliberate cultivation of crops rescued early humans from the precarious, hand-to-mouth existence of nomadic foraging, ushering in an era of nutritional abundance and leisure that allowed complex civilization to take root. However, the bioarchaeological record tells a fundamentally contradictory story. Osteological analyses of populations from early sedentary farming communities reveal rampant malnutrition, stunted growth, and a high prevalence of infectious diseases that were remarkably rare among their hunter-gatherer predecessors. This empirical evidence dismantles the foundational assumption that the agrarian shift was motivated by a desire for, or resulted in, an elevated standard of living.

Because agriculture demonstrably degraded the immediate well-being of its early practitioners, its widespread adoption must be explained by factors other than voluntary progress. Recent paleoclimatological models point to severe ecological duress at the close of the Pleistocene. As global temperatures fluctuated and Pleistocene megafauna declined, the reliable resource networks of foraging bands fractured. Concurrently, slow but steady population growth placed unprecedented pressure on these shrinking habitable zones. In restricted geographical corridors like the Fertile Crescent, humans were effectively trapped. The transition to intensive cereal cultivation was not a stroke of genius, but a desperate, obligatory adaptation to extract maximum caloric yield from rapidly diminishing territories.

The structural demands of this new economic paradigm further eroded the quality of human life by necessitating rigid social stratification. Nomadic foraging bands operated on principles of egalitarianism and fluid mobility. In contrast, agrarian survival depended on relentless, backbreaking labor and the physical defense of static assets—primarily arable land and granaries. The existential need to protect these accumulated surpluses from external raiding and internal theft catalyzed the formation of a warrior class and centralized administrative hierarchies. Consequently, the caloric surplus generated by the peasantry was immediately expropriated by an emergent non-producing elite, ensuring that the average farmer experienced none of the supposed 'abundance' of the agrarian revolution.

To resolve the paradox of how a system that impoverished its participants came to dominate the globe, one must shift focus from individual welfare to demographic carrying capacity. While agrarianism drastically lowered the quality of life per capita, it supported population densities orders of magnitude greater than foraging could sustain. Fed by steady, albeit nutritionally poor, caloric surpluses and organized by coercive hierarchies, agrarian societies possessed overwhelming numerical and military superiority. When expanding agricultural populations inevitably collided with foraging territories, the dense, organized agrarian societies invariably displaced or absorbed the smaller nomadic bands. Ultimately, the agrarian system succeeded because it ruthlessly maximized the expansive potential of the collective, entirely at the expense of individual prosperity.

Read the following summaries of two arguments:

Passage A argues that the transition to standardized coinage was driven primarily by the state's need to efficiently collect taxes across a vast empire, rather than to facilitate local trade.

Passage B posits that the development of bright plumage in certain bird species evolved primarily as a mechanism for long-distance species recognition in dense forests, rather than for attracting mates in close proximity.

Match each element from Passage A's argument with its direct structural counterpart in Passage B's argument.

The following arguments each contain a distinctive flaw in reasoning. Match each argument on the left with the abstract description on the right that most accurately identifies its primary logical vulnerability.

Passage A
The central mystery of language acquisition is how quickly young children master the complex syntactic rules of their native tongue. This phenomenon is inexplicable without positing an innate, specialized language acquisition device (LAD). The "poverty of the stimulus" argument demonstrates that the primary linguistic data children receive is far too fragmented and incomplete for them to deduce the abstract structural dependencies governing language. Furthermore, the presence of cross-linguistic universals—structural rules that apply to every known human language—proves that these constraints are biologically hardwired. The rapid generalization of linguistic rules to entirely novel contexts—such as a child correctly conjugating a nonsense verb they have never encountered—cannot be explained by simple imitation. This generative capacity indicates that children are mapping words onto a pre-existing syntactic template. Finally, evidence for language as an autonomous, modular cognitive faculty comes from specific language impairment (SLI), a condition wherein individuals exhibit profound syntactic deficits despite possessing otherwise normal general intelligence.

Passage B
The formalist insistence on an innate, modular grammatical faculty rests on a severe underestimation of both the richness of linguistic input and the power of human learning mechanisms. Usage-based models illustrate that language emerges from domain-general cognitive processes—such as statistical pattern recognition, analogical reasoning, and joint attention—interacting with dense environmental data. When child-directed speech is subjected to rigorous corpus analysis, the supposed "poverty of the stimulus" vanishes; the input is replete with probabilistic cues that sophisticated learning algorithms can leverage to extract rule-like behaviors. Furthermore, regarding the supposedly biological nature of cross-linguistic universals, emergentists demonstrate that these structural commonalities are inevitable consequences of shared human perceptual constraints and the practical demands of efficient social communication, representing a form of convergent evolution rather than a genetic endowment. Similarly, what formalists interpret as the application of innate, abstract rules to novel words is more accurately modeled as domain-general pattern matching based on phonological similarity to existing lexical chunks. Finally, purported evidence of a strictly modular language faculty, such as the existence of specific language impairment, has been widely misinterpreted. Rather than indicating a localized grammatical defect, closer neurological examination reveals that these impairments correlate strongly with subtle, non-linguistic processing bottlenecks, such as deficits in general auditory processing speed or working memory capacity.

Analyze the conflicting viewpoints presented in the texts above. For each specific evidentiary claim advanced by Author A (Left), select the corresponding theoretical mechanism that Author B relies upon to refute or reinterpret it (Right).

Match each short argument with the description of its underlying logical structure or flaw.

For each logical argument presented below, identify the unstated assumption upon which the argument's conclusion strictly depends. Apply the Negation Test: if the logical opposite of the assumption destroys the argument's conclusion, it is the correct necessary assumption.

Each of the following arguments contains a distinct vulnerability in its logical reasoning. Match each flawed argument with the abstract description that most accurately identifies its reasoning error.

The following arguments each contain a distinctive reasoning vulnerability. Match each flawed argument on the left with the statement on the right that most accurately describes the flaw in its reasoning.

Pair each of the following short deductive arguments with the statement that most accurately characterizes its logical form or reasoning defect.