You should be more confident in situation is challenging you.
A. wherever
B. whenever
C. however
D. whatever
网友回答
A. wherever
B. whenever
C. however
(答案→)D. whatever
解析：句意：无论在什么挑战你的情况中你都应该有自信。Whatever 引导了一个宾语从句，修饰situation,whatever situation 在从句中做主语。A.无论在哪里；B.无论什么时候；C.无论怎样，然而。