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Difficulty: MediumPart-to-Whole Rhetorical Function

Many avian species adjust the pitch of their songs in urban environments to prevent their signals from being drowned out by low-frequency traffic noise. To investigate this phenomenon, behavioral ecologist Angela Medina recorded song sparrows in both rural state parks and busy downtown plazas across California. Medina's findings revealed that urban sparrows sang at significantly higher minimum frequencies than their rural counterparts. However, this acoustic shift came with a trade-off, as the higher-pitched songs were less effective at attracting mates over long distances. Ultimately, Medina's study highlights how anthropogenic noise forces animals to balance survival communication against reproductive success.

Which choice best describes the function of the underlined sentence in the text as a whole?

  1. It describes the research methodology used to investigate the general phenomenon introduced in the opening sentence.Answer
  2. B
    It presents the primary conclusion of the passage regarding the consequences of urban noise for avian species.
  3. C
    It identifies a specific environmental factor that prevents rural sparrows from adapting to urban noise.
  4. D
    It offers a theoretical explanation for why certain bird species prefer nesting in rural state parks.

Answer

The correct option is the one stating that the underlined sentence describes the research methodology used to investigate the general phenomenon introduced in the opening sentence. The opening sentence notes that avian species adjust their song pitch in cities to overcome noise, and the underlined sentence explains how a researcher set out to study this.
The correct choice is the one stating that the sentence describes the research methodology used to investigate the general phenomenon. The first sentence introduces the adaptation of bird songs in urban environments, and the underlined sentence immediately follows by explaining the specific research process (recording sparrows in rural and urban areas) used to study this phenomenon.

Step-by-Step Solution

1
Analyze the context before the underlined sentence.
The first sentence introduces a general biological phenomenon: birds altering their song pitch in urban settings to overcome low-frequency noise.
This establishes the topic that the research will address.
2
Examine the underlined sentence to identify its immediate function.
The underlined sentence states that a researcher recorded sparrows in both rural and urban environments to investigate this phenomenon.
This describes the practical experimental design or method used by the researcher to gather data.
3
Connect the function of the underlined sentence to the rest of the text.
The subsequent sentences discuss the findings and conclusions of the study that was introduced by the underlined sentence. Therefore, the underlined sentence acts as a transition detailing the methodology of the investigation into the initial phenomenon.
This confirms that the sentence functions to introduce the study's methods before showing its findings.

Key Concept

Identifying how a specific sentence functions rhetorically in relation to the main ideas and development of a passage.
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Topics

Part-to-Whole Rhetorical Function

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