It's impolite to laugh at ,stare at or play ___ on disabled people.

问题描述:

It's impolite to laugh at ,stare at or play ___ on disabled people.
A.fun B.jokes C.tricks D.parts
顺便可翻译一下

对残疾人取笑,盯着看,戏弄是不礼貌的.
选Cplay tricks on sb.戏弄某人