Directions: This question presents a sentence, all or part of which is underlined. Beneath the sentence you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.

Instead of promoting a state of near-sleep, hibernation does not make an animal vulnerable to attack by predators because the brain is kept in a normal state of alertness.