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

我想問的是can與ability的不同

查了一下語法書: can 可表

1. 能力(應該跟ability一樣)

2.可能

3.許可

是不是說can的用法較ability多呢??

再來又看到優先原則: can>be able to

是因為簡潔嗎???

另外, E選項 the ability for it to broaden its membership and leave

for it很wordy之外, the ability後面還是有to阿,也就是符合ability to的慣用用法,如果去除掉for it,語法上是否正確???

請賜教