Function of a Word or Phrase
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PSAT Reading & Writing › Function of a Word or Phrase
Which choice best describes the function of the underlined sentence in the overall structure of the text?
Some educators advocate for frequent low-stakes quizzes as a way to improve long-term learning. Studies of retrieval practice show that recalling information strengthens memory more effectively than rereading notes, even when students feel less confident afterward. In classroom trials, students who took short quizzes often performed better on cumulative exams than students who spent the same time reviewing. However, quizzes can crowd out discussion or project work if they are overused or poorly aligned with course goals. Therefore, proponents typically recommend brief quizzes integrated into broader instructional plans.
It provides empirical support for a strategy
It presents a counterexample to a claim
It shifts focus to implementation details
It defines a key educational term
Explanation
The underlined sentence provides empirical support for a strategy by citing studies on retrieval practice that back the advocacy for low-stakes quizzes mentioned earlier. It connects the general recommendation to research evidence, strengthening the argument before discussing classroom trials and potential drawbacks like overcrowding instruction. This support builds a case for the strategy while leading to balanced recommendations. Choice B could mislead by framing it as a counterexample, but it reinforces rather than challenges the claim. Choice D incorrectly assigns a shift to implementation, which occurs later. For function questions, note how sentences with research references often serve to empirically support preceding ideas, especially in educational or scientific texts.
Which choice best describes the function of the underlined sentence in the overall structure of the text?
Urban ecologists have argued that city parks can serve as “stepping-stones” for pollinators moving across heavily built landscapes. To test this idea, researchers surveyed bee species in 18 parks that varied in size and distance from one another. They found that parks closer together shared more species, suggesting that bees disperse between green spaces rather than persisting in isolation. However, the study also noted that floral diversity within each park predicted bee abundance more strongly than park size did. Taken together, the results imply that connectivity matters, but only when parks also provide sufficient food resources.
It describes the study’s method.
It introduces a central claim.
It presents the study’s main result.
It states the author’s final conclusion.
Explanation
The underlined sentence describes the study's method by explaining how researchers tested the idea of parks as stepping-stones for pollinators. It follows the initial argument from urban ecologists and sets up the subsequent presentation of findings, such as shared species in closer parks and the role of floral diversity, thereby bridging the hypothesis to the evidence and implications. This placement shows the sentence's role in outlining the practical approach before delving into results and conclusions. A tempting distractor is choice C, which incorrectly assigns the role of presenting the main result, but the actual results (like species sharing and floral diversity's impact) appear in the sentences that follow. Choice A misreads it as introducing the central claim, which is actually stated in the first sentence about ecologists' argument. In function questions, always read the sentences before and after the underlined portion to trace how it contributes to the text's logical progression.
Which choice best describes the function of the underlined sentence in the overall structure of the text?
Historians once described the Industrial Revolution as a sudden break from premodern life, but newer scholarship emphasizes gradual change. In many English towns, household spinning and weaving expanded for decades before factories dominated production. This continuity suggests that industrialization built on existing skills and local trade networks rather than replacing them overnight. At the same time, factory labor did introduce novel forms of discipline, including time clocks and centralized supervision. The revised account thus balances long-term development with recognition of genuinely new workplace institutions.
It states the passage’s overall conclusion
It acknowledges an alternative viewpoint
It offers a specific piece of evidence
It signals a shift to a new topic
Explanation
The underlined sentence offers a specific piece of evidence by illustrating the gradual expansion of household production before factories. It builds on the initial contrast between old and new historical views of the Industrial Revolution, providing concrete support for the idea of continuity, which then leads into discussions of new factory disciplines and a balanced revised account. This flow emphasizes how the evidence refines the understanding of industrialization as evolutionary rather than abrupt. Choice D might tempt because the sentence contributes to the conclusion, but it incorrectly labels it as the overall conclusion when the passage ends with a broader synthesis. Choice C misassigns it as acknowledging an alternative, but it's actually supporting the main scholarly shift. In function questions, watch for scope: evidence supports claims without necessarily concluding or shifting topics entirely.
Which choice best describes the function of the underlined sentence in the overall structure of the text?
Psychologists studying memory consolidation distinguish between short-term rehearsal and long-term stabilization. During sleep, hippocampal activity replays patterns associated with recent learning, strengthening connections in the cortex. This mechanism helps explain why sleep deprivation often harms recall and skill acquisition. Still, not all sleep stages contribute equally, and some tasks benefit more than others. Consequently, researchers now examine how specific sleep features, like spindles, relate to different kinds of learning.
It draws a final conclusion
It shifts to a new topic
It introduces a counterargument
It provides a mechanistic explanation
Explanation
The underlined sentence provides a mechanistic explanation for memory consolidation by describing hippocampal activity during sleep. It follows the distinction between short-term and long-term processes and precedes explanations of sleep deprivation effects, detailing how replay strengthens connections. This mechanism bridges the concept to practical implications like recall impacts. Choice B might tempt if misread as opposition, but it elucidates rather than counters; choice C incorrectly assigns a concluding role when it's explanatory support. In function questions, identify sentences that explain 'how' something works to separate them from evidence or conclusions.
Which choice best describes the function of the underlined sentence in the overall structure of the text?
In art history, the term “avant-garde” is often used as if it described a single, unified movement. In practice, groups labeled avant-garde have differed sharply in politics and aesthetics, from Dada’s antiwar satire to Futurism’s celebration of speed and violence. Recognizing these differences prevents critics from treating innovation as automatically progressive. Yet the label persists because it captures a shared stance of opposition to established norms. A careful account therefore uses the term while specifying which tradition and goals are at stake.
It illustrates diversity within a category
It introduces a new topic unrelated to art
It acknowledges a limitation of historical sources
It draws a conclusion about terminology
Explanation
The underlined sentence illustrates diversity within a category by highlighting differences in politics and aesthetics among avant-garde groups like Dada and Futurism. It follows the critique of treating 'avant-garde' as unified and provides examples of variation, which then prevents overgeneralization and leads into the label's persistence and need for specificity. This flow uses diversity to refine the term's use. Choice D might seem tempting as it relates to terminology, but it incorrectly labels it as concluding when it's illustrative; choice C misassigns it as acknowledging source limitations. In function questions, recognize diversity illustration when a sentence contrasts subgroups within a broader label.
Which choice best describes the function of the underlined sentence in the overall structure of the text?
In climate modeling, aerosols remain a major source of uncertainty because they can both cool and warm the atmosphere. Measurements show that sulfate particles tend to reflect sunlight, while black carbon absorbs it and heats surrounding air. This contrast helps explain why different regions experience different temperature effects depending on pollution sources. However, aerosol lifetimes are short, so their impacts can change quickly with policy or weather. As a result, improving aerosol observations is crucial for narrowing near-term climate projections.
It shifts to a new topic
It provides supporting evidence
It draws a final conclusion
It introduces a counterargument
Explanation
The underlined sentence provides supporting evidence for aerosols' uncertainty in climate modeling by contrasting the effects of different particle types. It follows the introduction of aerosols' dual roles and precedes regional explanations, using measurements to illustrate why aerosols complicate predictions. This evidence reinforces the need for better observations discussed later. Choice B might mislead by suggesting a counterargument, but it elaborates on the initial point; choice D incorrectly shifts it to a new topic when it deepens the existing one. In function questions, trace the evidence's role in supporting the paragraph's central uncertainty theme.
Which choice best describes the function of the underlined sentence in the overall structure of the text?
In museum studies, curators increasingly question the neutrality of display labels. When an exhibit describes an artifact as “primitive,” it subtly positions modern viewers as more advanced than the makers. Such wording can shape interpretation as strongly as the object itself, especially for visitors unfamiliar with the culture on display. Defenders of traditional labels argue that older terms are sometimes retained for consistency across collections. Nevertheless, many institutions now revise language to reduce implied hierarchies and invite more contextual understanding.
It acknowledges a limitation of reforms
It introduces the topic’s main controversy
It states the passage’s overall conclusion
It provides a specific illustrative example
Explanation
The underlined sentence provides a specific illustrative example by showing how the word 'primitive' in labels implies superiority and shapes viewer interpretation. It follows the introduction of questioning label neutrality and illustrates the issue, which then connects to the strength of wording's influence, defenders' arguments, and revisions for equity. This logical flow uses the example to concretize the abstract critique before discussing responses. Choice B might tempt as it relates to controversy, but it incorrectly labels it as introducing the main controversy when that's done earlier; choice C misreads it as acknowledging limitations of reforms, which isn't the focus. In function questions, identify examples by noting when a sentence applies a general idea to a particular case.
Which choice best describes the function of the underlined sentence in the overall structure of the text?
In microbiology, the term “biofilm” refers to communities of microbes attached to a surface. Within a biofilm, cells secrete a sticky matrix that slows antibiotic penetration and alters microbial metabolism. This structure helps explain why infections on medical implants can be difficult to eradicate. Still, biofilms vary widely across species and environments, so no single treatment works in all cases. Consequently, researchers test combinations of mechanical removal and targeted drugs to disrupt the matrix.
It introduces a counterargument
It provides a mechanistic explanation
It draws a final conclusion
It shifts to a new topic
Explanation
The underlined sentence provides a mechanistic explanation for biofilms' resilience by detailing the matrix's effects on antibiotics and metabolism. It follows the definition and precedes infection challenges, explaining how structure contributes to treatment difficulties. This mechanism underpins the need for varied treatments discussed later. Choice B might tempt if misread as opposition, but it elucidates the concept; choice C incorrectly concludes when it's mid-explanation. In function questions, focus on sentences that describe underlying processes to identify their explanatory role.
Which choice best describes the function of the underlined sentence in the overall structure of the text?
Environmental historians argue that ideas about “wilderness” have often been shaped by political power. In the United States, some early national parks were created by removing Indigenous communities who had long managed those landscapes. This history complicates the notion that parks simply preserve untouched nature. Park advocates respond that protected areas have prevented many forms of industrial exploitation. A fuller account therefore recognizes both conservation benefits and the social costs embedded in certain preservation policies.
It supplies historical evidence for a claim
It introduces the topic of wilderness broadly
It acknowledges a counterargument to criticism
It draws a concluding policy recommendation
Explanation
The underlined sentence supplies historical evidence for a claim by detailing the removal of Indigenous communities in creating U.S. national parks. It follows the argument about political shaping of 'wilderness' ideas and provides evidence, which then complicates preservation notions, notes advocates' responses, and calls for fuller accounts. This logical flow supports the critique with specifics. Choice C might tempt as it counters criticism, but it incorrectly labels it as acknowledgment when it's evidentiary; choice D misassigns it as a recommendation. In function questions, identify historical evidence by noting past events that back a broader argument.
Which choice best describes the function of the underlined sentence in the overall structure of the text?
Political theorists often distinguish between negative liberty (freedom from interference) and positive liberty (capacity to act). This distinction matters because policies can expand one kind of freedom while constraining the other. For example, mandatory schooling limits immediate choice but may increase long-term agency by building skills. Critics respond that such tradeoffs can be exaggerated when institutions are unaccountable. Still, the framework helps clarify why debates about “freedom” can involve genuinely different values.
It draws a final conclusion
It provides a specific example
It acknowledges a counterargument
It explains why a concept matters
Explanation
The underlined sentence explains why a concept matters by highlighting the policy implications of distinguishing negative and positive liberty. It appears after defining the liberties and before examples, underscoring the distinction's relevance to tradeoffs in freedom. This explanation connects the theoretical framework to real-world debates, enhancing its significance. Choice B could mislead by suggesting an example, but it discusses importance rather than specifics; choice C misreads it as a counterargument when it's affirmative. In function questions, note when a sentence links ideas to broader consequences to understand its explanatory role.