Question ID:PT59 S2 Q13 Passage:Bethany:  Psychologists have discovered a technique for replacing one's nightmares with pleasant dreams, and have successfully taught it to adults suffering from chronic nightmares. Studies have found that nightmare-prone children are especially likely to suffer from nightmares as adults. Thus, psychologists should direct efforts toward identifying nightmare-prone children so that these children can be taught the technique for replacing their nightmares with pleasant dreams. Stem:Which one of the following principles, if valid, most helps to justify drawing the conclusion in Bethany's argument? Correct Answer Choice:CChoice A:Psychologists should make an effort to determine why certain children are especially prone to nightmares while other children are not. Choice B:Any psychological technique that can be successfully taught to a child can also be successfully taught to an adult. Choice C:Psychologists should do everything they can to minimize the number of adults troubled by chronic nightmares. Choice D:Identifying nightmare-prone children is generally more difficult than teaching adults the technique for replacing nightmares with pleasant dreams. Choice E:Psychologists should not teach the technique for replacing nightmares with pleasant dreams to children who are unlikely to suffer from nightmares as adults.