Faced with challenges your ability is makes a difference.A. thatB. whichC. howD. what

问题补充：

Faced with challenges, your ability is makes a difference.

A. that

B. which

C. how

D. what

答案：

A. that

B. which

C. how

(答案→)D. what

解析：考查表语从句：句意：面对挑战，你的能力是产生影响的东西。表语从句中缺少主语，用what连接表语从句，that在表语从句中不做成分，which是“哪个”，how是“怎样”，不符合句意，选D。