Which ofthe following prefixes i

Which ofthe following prefixes is a pejorative prefix? [ ]
A、a- (asleep)
B、de- (de compose)
C、mal- (mal-practice)
D、extra- (extra-strong)
【正确答案】：C
【题目解析】：题干中提出的前缀特征是“不良含义”，选项中C中 mal的含义是坏的、不好的，符合要求。