All practice questions

Paleontologist: Fossils of the extinct dire wolf are frequently found in the exact same sedimentary layers as the remains of large, herbivorous megafauna. Because dire wolves possessed exceptionally robust jaws and teeth capable of crushing thick bones, it is clear that they primarily hunted and brought down these large herbivores.

Statement: The paleontologist's argument is actively weakened by the newly discovered fact that the bone-crushing jaw structure of the dire wolf is anatomically identical to that of modern specialized scavengers, which feed exclusively on the abandoned carcasses of animals killed by other predators.

A study on workplace environments found that employees stationed in open-plan offices spend, on average, 40 percent more time wearing noise-canceling headphones during the workday compared to employees working in traditional private offices. Furthermore, the researchers noted a strong positive correlation across all office types between the amount of time an employee spends wearing noise-canceling headphones and the frequency with which they report feeling socially isolated from their colleagues.

Based on the information provided, it is most strongly supported that employees in open-plan offices are, on average, more likely to report feeling socially isolated from their colleagues than are employees in traditional private offices.

An urban development commission observed that neighborhoods in the city with the highest density of coffee shops also experienced the most significant increases in residential property values over the last decade. Based on this observation, the commission concluded that the presence of coffee shops directly drives up local property values.

Which of the following statements, if true, would provide a valid alternative explanation for the observed correlation, thereby weakening the commission's conclusion? (Select all that apply)

Passage A
The prevailing doctrine in modern architectural conservation dictates that when restoring historic masonry structures, any modern intervention must be visually distinct from the original fabric. This principle of legibility ensures that the building functions as an honest historical document, preventing the falsification of the historical record. If a collapsed thirteenth-century stone vault must be stabilized, conservationists today will typically employ stark steel armatures, tensile cables, or poured concrete, adamantly refusing to artificially age these additions or carve them to mimic the lost masonry. To attempt to recreate what has been lost using traditional methods is structurally deceitful; it creates a false narrative of continuous perfection. Such structural rationalism is rooted in a profound respect for the original builders' engineering. By explicitly distinguishing the present from the past, the restorer preserves the intellectual integrity of the ruin, allowing future scholars to cleanly separate original structural logic from contemporary triage. The aesthetic result may occasionally be jarring to the casual observer, but it correctly prioritizes historical truth over nostalgic sentimentality.

Passage B
The contemporary compulsion to preserve historical structures often succumbs to a clinical exactitude that extinguishes the very aura these sites were meant to harbor. Ruins command our enduring fascination precisely because they are incomplete—they are monuments to the relentless erosion of time, offering viewers a profound meditation on impermanence. However, standard contemporary restoration practice treats ruins as mere data sets or engineering puzzles. When conservators inject conspicuous steel trusses or stark glass barriers into crumbling limestone abbeys, they typically claim to be acting in the service of architectural "honesty" and "legibility." Yet, this approach fundamentally misunderstands the psychological and aesthetic weight of the ruin. The authenticity of a historical site does not lie in its forensic legibility, but in the unbroken continuity of its gradual physical degradation. The introduction of harsh, aggressively industrial materials shatters this poetic continuum of decay, replacing the sublime melancholy of crumbling stone with the didactic juxtaposition of a museum display. True preservation should involve the most invisible stabilization possible—such as chemically matching traditional mortars—allowing the structure to maintain its organic relationship with time, rather than freezing it as a visually jarring hybrid of ancient ambition and modern industrialism.

Based on the arguments presented in the two passages, which of the following statements represent a point of disagreement between the authors? Select all that apply.

Match each argument on the left with the specific causal reasoning flaw it commits on the right.

Organizational psychologist: A company can build a truly innovative workplace culture only if it actively encourages its employees to take calculated risks without fear of reprisal. TechCorp recently implemented a policy that officially protects employees who take calculated risks from any negative consequences if those risks lead to failure. Therefore, TechCorp is successfully building a truly innovative workplace culture.

Which of the following best describes the logical flaw in the organizational psychologist's reasoning?

For decades, the astronomical community operated under a relatively rigid dichotomous framework when classifying the macroscopic bodies of our galaxy: celestial objects were generally understood to be either stars or planets. Stars were defined primarily by their ability to sustain nuclear fusion of hydrogen in their cores, a process that generates immense outward pressure to counteract gravitational collapse. Planets, conversely, were defined as non-luminous bodies that orbit these stars, formed from the residual accretion disks of gas and dust. However, the confirmed detection of Gliese 229B in 1995, the first unequivocally identified "brown dwarf," introduced a profound taxonomic complication that has since forced astrophysicists to reevaluate these entrenched definitional boundaries.

Brown dwarfs occupy a precarious mass range that defies traditional categorization. With masses roughly between 13 and 80 times that of Jupiter, they are significantly more massive than any conventional planet, yet they fall just short of the critical mass threshold required to ignite and sustain the stable hydrogen fusion characteristic of main-sequence stars. Instead, in their early stages, brown dwarfs are massive enough to fuse deuterium—a heavier, rarer isotope of hydrogen. This brief period of nuclear burning emits a faint glow, mostly in the infrared spectrum, before the fuel is exhausted and the object gradually cools and dims over billions of years. This transient stellar-like behavior, combined with a physical composition and eventual cooling trajectory that closely mirrors that of gas giant planets, creates a unique astrophysical hybrid.

The existence of these intermediate bodies challenges not merely astronomical taxonomy, but the foundational theories of celestial formation. Traditionally, it was hypothesized that stars form from the top down, through the direct gravitational collapse of a molecular cloud, whereas planets form from the bottom up, through the gradual coagulation of material in a circumstellar disk. Brown dwarfs, however, exhibit characteristics that suggest they could form through either mechanism. Some appear to form in isolation, mimicking stellar birth on a miniature scale, while others have been found orbiting larger stars, hinting at a planetary-style accretion process.

Consequently, contemporary astrophysicists are increasingly arguing that treating brown dwarfs as merely "failed stars" or "overachieving planets" is conceptually inadequate. Rather than trying to force these objects into legacy categories, researchers must adopt a broader, unified spectrum of celestial formation. In this revised paradigm, brown dwarfs serve as the crucial missing link, demanding models that seamlessly integrate the physics of both stellar collapse and planetary accretion into a single continuous continuum.

Which of the following most accurately states the primary purpose of the passage?

The Regional Agronomy Council revoked the organic certification of Northfield Farm after the farm planted a drought-resistant heirloom wheat strain obtained from an uncertified wild seed repository. Northfield Farm demonstrated that the wheat was cultivated entirely without synthetic pesticides or chemical fertilizers, and that the resulting harvest met all biochemical purity standards for organic grain. Nonetheless, the council maintained that adherence to certified seed provenance is mandatory. Which one of the following principles, if valid, most helps to justify the Regional Agronomy Council's action?

Consider the following excerpt regarding urban planning policy:

[A] The traditional justification for Euclidean zoning—the rigid division of land into strictly segregated residential, commercial, and industrial districts—rests on its historical success in mitigating public health crises during the early twentieth century. [B] By isolating noxious industrial activities from residential neighborhoods, early municipal planners undeniably improved urban sanitation and living conditions. [C] Consequently, Euclidean zoning became the foundational doctrine of American urban development, operating on the assumption that geographic separation inherently promotes civic well-being.

[D] However, contemporary proponents of this model fail to recognize that the socioeconomic realities of the twenty-first century have fundamentally shifted. [E] Because modern municipalities rely on interconnected knowledge economies rather than heavy manufacturing, the strict compartmentalization mandated by traditional zoning now stifles the very economic vitality it was originally designed to protect. [F] Therefore, it is imperative that municipal authorities discard rigid Euclidean frameworks in favor of dynamic, mixed-use paradigms to ensure future urban sustainability. [G] Although critics argue that mixed-use development risks increasing localized congestion, this localized inconvenience is vastly outweighed by the systemic economic stagnation inherent in geographically segregated zoning.

Identify the specific sentence that explicitly formulates the author's primary thesis. Enter only the corresponding bracketed letter.

Political Scientist: A government is justified in restricting a product's sale only if the product poses a severe health risk and the public is completely unaware of this risk. The newly developed synthetic sweetener Dulcet poses a severe risk of long-term metabolic damage. However, the manufacturer has heavily publicized this risk in all of its promotional materials. Therefore, the government is not justified in restricting the sale of Dulcet.

The application of the principle in the political scientist's argument is most similar to the application of the principle in which one of the following?

Pair each passage on the left with the passage on the right that mirrors its exact underlying sequence of quantifiers and its logical validity.

An educational psychologist conducted a longitudinal study on cognitive development and found a strong correlation: children who became bilingual before the age of five were significantly more likely to exhibit advanced mathematical problem-solving skills by age ten than their monolingual peers. The psychologist concluded that the process of acquiring a second language early in life directly enhances the specific neural pathways required for advanced mathematical reasoning.

Which of the following statements, if true, provide a valid alternative explanation for the observed correlation that weakens the psychologist's conclusion? (Select all that apply)

A five-year study of thousands of elderly residents in Maplewood County revealed a strong statistical link between frequent participation in mentally demanding volunteer work and a significantly lower incidence of severe cognitive decline. Based on these findings, public health officials have concluded that engaging in mentally demanding volunteer work helps protect elderly individuals against cognitive deterioration.

The reasoning in the public health officials' argument is most vulnerable to criticism on the grounds that it

Any satellite or debris fragment in Earth orbit below an altitude of 600 kilometers experiences significant atmospheric drag. Any object experiencing significant atmospheric drag will naturally re-enter Earth's atmosphere and burn up within 25 years. The recent Zenith satellite breakup occurred at an altitude of 500 kilometers. Objects resulting from a satellite breakup initially occupy the same altitude as the breakup event itself, and none of the debris fragments from the Zenith breakup possess propulsion systems capable of raising their altitude.

Based on the information above, which of the following statements are most strongly supported? (Select all that apply)

All of the historical novels published by Sterling Press feature a female protagonist. Furthermore, none of the books nominated for this year's National Fiction Prize feature a female protagonist. However, several books published by Sterling Press were nominated for the National Fiction Prize this year.

Which one of the following statements is most strongly supported by the information above?

Studies indicate that elderly individuals who own pets are significantly less likely to suffer from clinical depression than those who do not. Clearly, the companionship provided by pets actively prevents the onset of depression in the elderly.

Which one of the following exhibits a flawed pattern of reasoning most similar to that in the argument above?

The passage below delineates a contemporary debate within evolutionary biology concerning the mechanisms of adaptation. Evaluate the text to identify the explicit contentions of the various entities mentioned. Match each perspective or source of evidence to the statement that most accurately encapsulates its explicitly stated central point.

For decades, the Neo-Darwinian synthesis has served as the foundational paradigm of evolutionary biology. The central tenet of this framework is unequivocal: heritable variation arises exclusively through random genetic mutations, thereby precluding any environmentally acquired physiological traits from carrying evolutionary significance. According to this orthodox model, the environment acts merely as a sieve, selecting upon pre-existing genetic diversity rather than generating novel, heritable adaptations.

Recently, a vanguard of researchers has mounted a formidable challenge to this consensus by emphasizing transgenerational epigenetic inheritance. These scholars demonstrate that environmental stressors can induce chemical modifications to DNA—such as methylation—which are subsequently transmitted to progeny. The explicit thesis advanced by these proponents is that environmentally triggered epigenetic modifications constitute a distinct, potent engine of adaptive evolution that operates alongside, and often more rapidly than, classical genetic mutation.

While the empirical evidence for epigenetic inheritance is undeniable, its broader macroevolutionary implications are frequently overstated by its most zealous advocates. A systematic analysis of longitudinal lineage studies has yielded a more circumscribed conclusion: the vast majority of environmentally induced epigenetic marks are fundamentally transient, routinely undergoing a complete biochemical reset within a few generations. Consequently, the only thesis supported by the current totality of data is that although epigenetic mechanisms furnish a vital, rapid adaptive response to transient environmental fluctuations, they ultimately do not supplant stable genetic mutation as the primary driver of enduring evolutionary divergence.

Match each of the following flawed arguments to the abstract description of the Ad Hominem (Source Argument) fallacy it commits.

For decades, historians of late antiquity characterized the fall of the Western Roman Empire as a sudden, cataclysmic economic collapse precipitated by external invasions. This traditional narrative relied heavily on textual sources describing widespread systemic failure. More recently, however, the synthesis of numismatic and archaeological data has challenged this monolithic view, suggesting instead that the imperial economy underwent a highly localized, gradual transformation. Proponents of this revised model point out that while some regions experienced severe material decline—such as the rapid deurbanization and cessation of coin circulation observed in fifth-century Britain—other provinces demonstrated remarkable resilience. Excavations in the Levant, for instance, reveal vibrant trade networks and sustained agricultural surpluses continuing well into the sixth century. Thus, the notion of a uniform imperial collapse is historically untenable; the economic trajectory of the late empire must instead be understood as a mosaic of regional evolutionary paths rather than a singular catastrophic event.

Which one of the following most accurately expresses the main point of the passage?

For decades, the dominant anthropological paradigm regarding the origins of urbanism was anchored by the 'hydraulic hypothesis,' which posited that the administrative demands of large-scale irrigation in arid river valleys necessitated the creation of centralized, coercive state bureaucracies. According to this model, the state and the city were inextricably linked, with despotic elites engineering urban centers from the top down to consolidate control over agricultural surplus. However, recent excavations at late Chalcolithic sites in northern Mesopotamia upend this causal sequencing. Stratigraphic analysis of sprawling, low-density settlements reveals extensive industrial workshops and decentralized trade hubs that predate the construction of monumental administrative architecture by centuries. These early urban agglomerations appear to have grown organically from the bottom up, driven by migration, localized economic specialization, and religious pilgrimage rather than elite decree. Consequently, the traditional assumption that state formation is an absolute prerequisite for urbanism must be discarded; the archaeological record demonstrates that early cities could, and did, emerge as self-organizing networks long before the advent of centralized bureaucratic authority.

Which one of the following most accurately expresses the main point of the passage?