5) Choice B is the correct answer. Explanation The passage addresses the question of why the pilomotor reflex has survived in human beings despite the fact that its original functions—to insulate and to appear larger to predators—are no longer useful. The suggested reason is that the reflex “has acquired a new role,” namely, as a means to signal to others that one is experiencing a strong emotion. This assumes that the ability to send such a signal is useful to human beings.
6) Choice E is the correct answer. The next-to-last sentence says that goose bumps in humans now serve as an outward sign of strong emotion. If so, this would explain how they could have taken on another role, so Choice E is correct. The sentence does not make a distinction (Choice A), correct a misconception (Choice B), suggest any reason for the connection between emotion and goose bumps (Choice C), or suggest that flushing and goose bumps signal the same state (Choice D).
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