PrepTest 108, Section 4, Question 3
Naturalists have long studied the ability of North(449 more words not shown)
According to the passage, the(18 more words not shown)
- Aconsume more food(13 more words not shown)
- Bconsume enough food(8 more words not shown)
- Cconsume more food(4 more words not shown)
- Dconsume more food(11 more words not shown)
- Econsume less food(12 more words not shown)
Reading the passage
Being tiny means losing heat quickly. The second paragraph connects that heat loss to needing more food—but more in what sense? The comparison is “per unit of body mass,” against birds twice as heavy.
What we’re looking for
A small bird could eat less in total than a large bird while needing more food for each unit of its weight. Keep that distinction when we check the choices.
Working the answers
- A
The comparison isn't with every bird of equal mass. It's with birds twice the kinglet's mass.
- B
A full stomach provides only an hour's warmth, but that doesn't establish a requirement to keep it constantly full. Stored fat also supplies energy. This isn't the implication of the heating-and-cooling comparison.
- C
This loses the relative-to-body-mass qualification. Needing more food for its size doesn't establish that a kinglet eats more food in total than a larger bird.
- DCorrect
For each unit of body mass, kinglets need 1.75 times the food required by birds twice their mass to maintain the same temperature (paragraph 2). D preserves that comparison without repeating the percentage.
- E
Less food per unit of mass reverses the finding. The smaller birds need more relative to their size.
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