She is very dear to us. We have been prepared to do _____it take

She is very dear to us. We have been prepared to do _____it takes to save her life.


A、whichever
B、however
C、whatever
D、whoever
【正确答案】：C
【题目解析】：本题考查名词性从句的引导词。句意：她对我们来说是非常重要的，我们已经做好一切准备来拯救她的生命。whatever引导宾语从句，在从句中作宾语；用whichever引导，则表示“任何哪个”，与题意不符。