Psychologists say that nightmares can （） the mental state and possibly re-strengthen the fears that come up in the dreams.
A、agitate
B、alleviate
C、imitate
D、motivate
【正确答案】：A
【名师解析】:噩梦可以扰乱心理状态，并且可能加强梦中出现的恐惧感。选项A "agitate" 意为扰乱或使不安，符合题目描述的情况。选项B "alleviate" 意为减轻或缓解，与题目描述相反。选项C "imitate" 意为模仿，与题目无关。选项D "motivate" 意为激励或激发，也与题目描述不符。因此，正确答案是A。
