Courage is a kind of quality- and that’s it takes to face the challenges in life.A. tha

问题补充：

Courage is a kind of quality --- and that’s it takes to face the challenges in life.

A. that

B. which

C. why

D. what

答案：

A. that

B. which

C. why

(答案→)D. what

解析：句意：勇气是一种品质，是面对人生的挑战需要的东西。这里is后面是表语从句，表语从句中take缺少宾语，用what引导宾语从句，所以选D。