Expression of IdeasHardChoosing a logical transition
Expression of Ideas practice question
Coral reefs occupy less than one percent of the ocean floor. ____ they provide habitat for roughly a quarter of all known marine species.
Which choice completes the text with the most logical transition?
- A. Even so,Correct
- B. As a result,
- C. In other words,
- D. For example,
Answer: A. Even so,
The first sentence says reefs are tiny in area; the second says they support a huge share of species. The second point is striking BECAUSE of the first, not caused by it — a concession transition fits: 'Even so'.
Why the other answers are wrong
- B. As a result,
- 'As a result' would mean the reefs' small area causes them to hold many species. The passage doesn't claim that; it contrasts small size with outsized importance.
- C. In other words,
- 'In other words' restates the previous sentence. Supporting a quarter of marine species is not a restatement of covering one percent of the sea floor.
- D. For example,
- 'For example' would make the second sentence an instance of the first. It isn't an example of small area; it's a contrast with it.
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