大全975题，各种指代，彻底搞晕了

misslila

Puritan fanatics brought to civil and military affairs a coolness of judgment and mutability of purpose that some writers have though inconsistent with their religious zeal, but which was in fact a natural outgrowth of it.

(A) but which was in fact a natural outgrowth of it

(B) but which were in fact a natural outgrowth of it

(C) but which were in fact natural outgrowths of it

(D) but it was in fact a natural outgrowth of them

(E) which was in fact a natural outgrowth of it

请问 it 和them 都指谁？
which和that是平行的指一个东西么？

misslila

帮我讲一下吧～～