PrepTest 108, Section 4, Question 7
Naturalists have long studied the ability of North(449 more words not shown)
The passage suggests that the(11 more words not shown)
- ANaturalists have yet(16 more words not shown)
- BThe kinglet's diet(18 more words not shown)
- CThe behavior of(15 more words not shown)
- DNocturnal behavior observed(14 more words not shown)
- EThe kinglet adapts(10 more words not shown)
Reading the passage
This is an open question: the answer could draw on any of the facts we've read. We know the energy explanations remain incomplete, and the nighttime-clustering idea is a possibility. We need support for the particular claim an answer makes, not merely something that could turn out to be true.
Working the answers
- A
This expands the mystery to small birds generally. The opening actually explains how several kinds of birds survive; kinglets are the puzzling case singled out.
- B
The stored fat discussed accounts for only about half the overnight energy requirement. The writer doesn't suggest that discovering more fat in the diet will supply the full explanation. A possible future finding isn't automatically something the writer proposes.
- C
Calling does appear in the final sentence, but only as part of a hypothesis about groups finding one another. C turns that proposed mechanism into an established part of kinglet behavior.
- DCorrect
The writer treats the study of related goldcrests as potentially relevant to kinglets. That supports proposing similar nighttime behavior as a reasonable possibility. The wording leaves room for uncertainty: related-species evidence can suggest what kinglets might do without confirming that they do it.
- E
Drastically lowering body temperature is torpor. Researchers considered it for kinglets but found no evidence. The account therefore doesn't support it as their established adaptation.
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