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Rhetorical Synthesis SAT question

Reading and Writing · Expression of Ideas · Easy · Answer it here, explanation included.

While researching a topic, a student has taken the following notes:

  • Bioluminescence is the emission of light by living organisms.
  • This light is produced by chemical reactions in organisms’ cells.
  • Jellyfish emit flashes of blue light.
  • This behavior serves to startle predators.
  • Black dragonfish emit a steady red light.
  • This behavior helps them locate prey in deep waters.

The student wants to emphasize a difference between the behavior of jellyfish and that of black dragonfish. Which choice most effectively uses relevant information from the notes to accomplish this goal?

ExplanationShow

Choice D is the best answer. The sentence emphasizes a difference between the behavior of jellyfish and that of black dragonfish, noting that jellyfish and black dragonfish emit light as part of different behaviors (protection and predation, respectively).

Choice A is incorrect. The sentence emphasizes a similarity between jellyfish and black dragonfish; it doesn’t emphasize a difference between the behavior of the two animals. Choice B is incorrect. The sentence emphasizes the type of bioluminescence exhibited by black dragonfish, noting that it’s used in predation; it doesn’t emphasize a difference between the behavior of the two animals. Choice C is incorrect. The sentence defines bioluminescence and explains how it works; the sentence doesn’t mention either animal or emphasize a difference between them.

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