Expression of IdeasHardRhetorical synthesis
Expression of Ideas practice question
A student took these notes for an article:
• Bioluminescence is the production of light by living organisms.
• Many deep-sea creatures use it to attract prey.
• Fireflies use it to attract mates.
• Some fungi glow to attract insects that spread their spores.
The student wants to emphasize that bioluminescence serves a variety of purposes across different organisms. Which choice best uses the notes to accomplish this goal?
- A. Bioluminescence is the production of light by living organisms.
- B. Deep-sea creatures, fireflies, and some fungi all produce light, yet they use it for different purposes — luring prey, attracting mates, and spreading spores.Correct
- C. Fireflies use bioluminescence to attract mates.
- D. Bioluminescence is common among deep-sea creatures.
Answer: B. Deep-sea creatures, fireflies, and some fungi all produce light, yet they use it for different purposes — luring prey, attracting mates, and spreading spores.
The goal is to show variety of purposes across organisms. Only B lists multiple organisms AND their differing purposes. A defines the term, while C and D each mention just one organism.
Why the other answers are wrong
- A. Bioluminescence is the production of light by living organisms.
- This defines bioluminescence but names no organism and no purpose, so it can't show the variety the question asks for.
- C. Fireflies use bioluminescence to attract mates.
- This gives one organism and one purpose; variety requires showing that different organisms use light for different ends.
- D. Bioluminescence is common among deep-sea creatures.
- This names one group of organisms and doesn't mention any purpose at all, let alone a range of them.
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