Beyond the immediate cash flow crisis that the museum faces, its survival depends on if it can broaden its membership and leave its cramped quarters for a site where it can store and exhibit its more than 12,000 artifacts.
A if it can broaden its membership and leave
B whether it can broaden its membership and leave
C whether or not it has the capability to broaden its membership and can leave
D its ability for broadening its membership and leaving
E the ability for it to broaden its membership and leave
本句考查的是whether和if的用法，从句作介词宾语时只用whether不用if。因此A 选项错误 B 选项 正确 C 选项 it has the capability是多余的，且用法不对。做某事的能力应该是ability of doing sth。错误 D，E 选项 同样犯了ability of doing sth的错误，且语义表达不明。错误