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Difficulty: EasyPart-to-Whole Rhetorical Function

In marine biology, the study of bioluminescent organisms has revealed unique survival adaptations in deep-sea ecosystems. Some species of jellyfish emit flashes of light to startle predators, allowing them time to escape. For example, the species *Aequorea victoria* produces a green glow when threatened by larger fish. By understanding these individual mechanisms, scientists can better analyze the overall food web dynamics in the darkest zones of the ocean.

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

  1. A
    It contradicts the claim that bioluminescence is used primarily for protection against predators.
  2. It provides a specific example that illustrates the general behavior of jellyfish described in the previous sentence.Answer
  3. C
    It presents the main conclusion of the study regarding food web dynamics in the deep ocean.
  4. D
    It suggests that all marine organisms in the deep ocean rely on the same chemical reactions for survival.

Answer

The correct answer is the statement that the underlined sentence provides a specific example illustrating the general behavior of jellyfish described in the previous sentence.
The correct option is the one stating that the underlined sentence provides a specific example of the behavior described in the previous sentence. The preceding sentence states that some jellyfish emit flashes of light to startle predators, and the underlined sentence illustrates this general claim by providing the specific instance of *Aequorea victoria* glowing green when threatened.

Step-by-Step Solution

1
Read the sentence immediately preceding the underlined portion to identify the general claim being made.
The preceding sentence claims that some jellyfish species use flashes of light to startle predators and escape.
This establishes the context and the general claim that the underlined sentence might support or illustrate.
2
Analyze the underlined sentence to identify its specific content and how it relates to the preceding claim.
The underlined sentence introduces a specific jellyfish (*Aequorea victoria*) that glows green when threatened by larger fish.
This shows that the underlined sentence provides a concrete, real-world instance of the general behavior described in the previous step.
3
Compare the function of the underlined sentence to the choices to find the one that accurately describes this relationship.
The option stating that it provides a specific example illustrating the general behavior of jellyfish matches this relationship perfectly.
This validates the correct option while eliminating the distractors that mischaracterize the sentence's function.

Key Concept

Part-to-Whole Rhetorical Function
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Topics

Part-to-Whole Rhetorical Function

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