Argument Structure and Method

The city council is considering planting more oak trees in the downtown plaza. Oak trees provide significantly more shade than the currently planted elm trees. Therefore, planting oak trees will make the plaza cooler during the summer months. Because a cooler plaza will attract more visitors to the downtown area, the city council should proceed with the plan to plant oak trees.

Which one of the following most accurately describes the role played in the argument by the claim that planting oak trees will make the plaza cooler during the summer months?

In an argument by elimination, competing hypotheses are systematically ruled out by specific premises until only one valid option remains. Match each proposed hypothesis for the sudden decline in a local bee population (left) with the specific evidence that logically eliminates it from consideration (right).

Some art historians argue that the painting Tobias and the Angel should be reclassified as primarily a work of Leonardo da Vinci rather than his master, Andrea del Verrocchio. This proposed reclassification is fundamentally misguided. Laboratory analysis of the painting does reveal brushwork characteristics distinctly matching those of a young da Vinci, and Verrocchio routinely allowed senior apprentices to execute significant portions of his commissions. Thus, da Vinci almost certainly painted the majority of the figures in this specific piece. Nevertheless, Renaissance definitions of authorship dictate that a painting belongs to the master whose workshop contracted and supervised the piece, regardless of whose hand actually applied the paint.

Which one of the following most accurately expresses the main conclusion of the argument?

Sociologist: Some urban analysts maintain that the recent widespread adoption of remote work will cause the permanent economic decline of city centers, citing the dramatic reduction in daily foot traffic in downtown business districts. However, this forecast is overly pessimistic. Just as the widespread adoption of the telephone did not eliminate the need for in-person business meetings but merely changed their primary purpose, the rise of remote work will likely transform city centers into specialized hubs for collaborative work and leisure rather than empty them out entirely.

Statement: The sociologist counters the analysts' forecast by drawing an analogy to a past technological advancement to demonstrate that the empirical evidence relied upon by the analysts is factually incorrect.

Ethicist: Some argue that corporations have a moral obligation to maximize the happiness of their employees, reasoning that corporations function like small governments, which have a duty to their citizens. However, if corporations were truly obligated to maximize employee happiness, they would be ethically required to distribute all profits as bonuses rather than reinvesting in the business. Since a corporation that cannot reinvest will inevitably go bankrupt—thereby eliminating jobs and causing widespread unhappiness—this view is clearly flawed.

Which of the following most accurately describes the method of reasoning used in the ethicist's argument?

Below are four excerpts from a panel discussion regarding a proposal to implement a universal basic income (UBI). Match each excerpt to the abstract description of the method of reasoning it primarily employs.

Anthropologist: Many researchers contend that the unusual wear patterns on the teeth of the extinct hominid *Paranthropus boisei* indicate a diet consisting exclusively of hard foods, such as nuts and seeds. However, extant primates like the sootey mangabey exhibit nearly identical dental wear patterns, yet their diet consists primarily of soft fruits, with hard foods eaten only during periods of scarcity. Thus, the wear patterns on *P. boisei* teeth do not definitively prove a diet restricted to hard foods.

Which of the following most accurately describes the method of reasoning used in the anthropologist's argument?

Read the following argument from an anthropologist. Then, match each excerpt from the argument to the statement that best describes its structural role.

Anthropologist: The prevailing hypothesis regarding the collapse of the Classic Maya civilization points to a period of prolonged drought as the primary cause. But this drought hypothesis is ultimately unconvincing. While paleoclimatological records do confirm a severe drought during that era, several major Maya cities located in the driest regions continued to thrive for centuries after the drought began. Therefore, factors other than climate change must have been the primary drivers of the societal collapse.

The contemporary legal framework surrounding corporate personhood ought to be stripped of its provisions protecting corporate political speech. It is true that some form of corporate personhood is practically necessary; without it, companies could not enter into enforceable contracts or face civil liability. However, the legal capacity to participate in commerce does not logically necessitate the granting of political rights, which were historically intended solely to secure the democratic participation of natural persons. Furthermore, since a business entity cannot vote, face incarceration, or hold public office, attributing civic expression rights to corporations fundamentally conflates economic utility with civic identity.

Which one of the following most accurately expresses the main conclusion drawn in the argument?

A strictly empirical approach to neuroscience is inherently insufficient to fully resolve the philosophical problem of human consciousness. Many neuroscientists operate under the assumption that mapping the precise neural correlates of cognitive states will eventually yield a complete explanation of subjective experience. However, even if researchers generate a comprehensive map of the brain activity corresponding to a specific emotion, the objective measurement of this neurological state cannot convey what it actually feels like to undergo that emotion. The qualitative character of subjective experience remains fundamentally distinct from its physical mechanisms. Therefore, discovering the neural correlates of an experience provides merely a functional description of its physical genesis, rather than a comprehensive account of its reality.

Which one of the following most accurately expresses the main conclusion of the argument?

Review the following argumentative passages and pair each excerpt with the abstract description that most accurately characterizes its primary method of reasoning.

Read the following argument carefully. Match each excerpt from the argument (on the left) with the statement that most accurately describes its structural role in the argument (on the right).

"Proponents of 'rewilding' argue that reintroducing apex predators to disturbed ecosystems will naturally restore ecological balance. They base this on the assumption that these ecosystems still possess the underlying carrying capacity to support such predators. This assumption, however, is demonstrably false. Decades of intensive agriculture have fundamentally altered soil microbiomes, drastically reducing the primary productivity that forms the base of the food web. Because of this reduction, herbivore populations cannot recover to historical levels. It follows that reintroduced apex predators would quickly exhaust their prey base and face starvation. Consequently, rewilding efforts that focus on apex predators without first restoring soil health are destined to fail. The true path to ecological restoration must therefore begin at the microscopic level."

Mayor: The proposed highway expansion is necessary to reduce traffic congestion, as it will divert commercial trucks away from city streets.
City Planner: While diverting commercial trucks is important, the highway expansion will actually increase overall traffic congestion by encouraging more commuters to drive instead of using public transit.

Statement: The Mayor and the City Planner disagree over whether the proposed highway expansion will reduce traffic congestion.

Read the following argument carefully. Then, match each excerpt from the stimulus to the statement that most accurately describes its structural role in the argument.

"Many agricultural historians argue that the adoption of the heavy plow in medieval Europe directly caused a rapid increase in population by drastically improving crop yields. Detailed manorial records, however, indicate that population growth in several key regions actually preceded the widespread introduction of the heavy plow by nearly a century. Consequently, the heavy plow was a result, rather than the primary cause, of medieval demographic shifts. After all, expanding populations require increased food production to sustain larger workforces. This mounting pressure to produce more food clearly forced medieval communities to innovate and adopt more efficient agricultural technologies."

City Council Member: Some residents argue that our town should ban all commercial development in the historic district on the grounds that such development inherently alters the character of the neighborhood. But if we accept the premise that any alteration of character is sufficient justification for a prohibition, we would also be forced to ban the restoration of dilapidated residential properties, since those renovations also drastically alter the neighborhood's current character. Thus, the residents' rationale is unsound.

Which of the following most accurately describes the method of reasoning used by the city council member?

Linguist: The theory that the proto-language of the Altaic family originated in nomadic pastoralist communities is challenged by the fact that the oldest reconstructed Altaic vocabulary lacks specialized terms for horse breeding. Defenders of the pastoralist theory attempt to explain away this absence by arguing that early Altaic speakers simply adopted the horse-breeding terminology of neighboring groups, which subsequently replaced their native terms in the linguistic record. However, this defense is inadequate. Recent computational phylogenetic studies, which bypass borrowed vocabulary by isolating deep ancestral root morphemes, confirm the complete absence of any pastoralist concepts in the foundational structure of the language.

Determine whether the following statement accurately describes the method of reasoning used in the argument:

The linguist counters the defenders' argument by demonstrating that the alternative explanation proposed by the defenders is logically incompatible with the original evidence cited against the pastoralist theory.

Policy Analyst: The city's initiative to reduce household water consumption by subsidizing high-efficiency showerheads is unlikely to succeed. When people install high-efficiency fixtures, they often take longer showers because they feel less guilty about wasting water. This behavioral shift typically offsets any water savings gained from the improved technology.

Statement: The policy analyst's argument proceeds by arguing that a proposed measure will fail because it will induce a behavioral change that counteracts its intended effect.

An argument concerning the impact of new trade legislation can be constructed from the statements below. Arrange the statements to reflect their logical progression in the reasoning chain, starting with the foundational premise, moving chronologically through the intermediate conclusions, and ending with the ultimate main conclusion.

Paleontologists have long debated the function of the hyper-enlarged auditory bullae found in the extinct mammalian predator *Megistotherium*. Because these structures superficially resemble those of modern desert foxes, which utilize them to dissipate excess body heat, many have hypothesized a primarily thermoregulatory function. However, the *Megistotherium* bullae exhibit exceptionally thick bony walls that would have completely insulated any circulating blood. Thus, the hypothesis that the bullae functioned as a heat dissipation mechanism is untenable. Given that the only other known evolutionary advantage of such massively enlarged structures is the enhanced detection of low-frequency vibrations generated by distant prey, we can confidently infer that *Megistotherium* developed these structures specifically as hunting adaptations.

Which one of the following most accurately describes the role played in the argument by the claim that the hypothesis that the bullae functioned as a heat dissipation mechanism is untenable?

Rotating different types of pesticides is ultimately the most economically sound approach for long-term farm management. True, farmers prioritizing short-term savings often apply a single, highly effective pesticide year after year. However, this single-pesticide strategy inevitably leads to escalating chemical costs over time. Pests that survive an initial application pass on their resistant traits to their offspring, meaning that significantly higher and more expensive concentrations of the chemical are required in subsequent planting seasons.

Which one of the following most accurately expresses the main conclusion of the argument?