Living in the central Australian desert has its problems,______ obtaining waa、for which b、to which c、 of which d、 in which

Living in the central Australian desert has its problems,______ obtaining waa、for which b、to which c、 of which d、 in which
Living in the central Australian desert has its problems,______ obtaining wa
a、for which
b、to which
c、 of which
d、 in which

Living in the central Australian desert has its problems,______ obtaining waa、for which b、to which c、 of which d、 in which
你没有把题写完 没有办法回答 快补充好题目

C和D都可能，特殊语境中A和B也成立。
您应当把后面完整的句子给出来更好。