20.   Byron possessed powers of observation that would have made him a great anthropologist and that makes his letters as a group the rival of the best novels of the time.

(A) makes his letters as a group the rival of

(B) makes his letters as a group one to rival

(C) makes his letters a group rivaling

(D) make his letters as a group the rival of（D）

(E) make his letters a group which is the rival of

The answer is D. But I think the anwer is WRONG, because E looks more parallel.

"make his letters a group " in E is parallel with "have made him a great anthropologist ", right?

如果两句话的意思一样，那就说明E redundant.

另外我觉得两个that后面都是 make A B，E的从句不能跟前面的并列。

谢谢2位! which我同意.

但make as好象没有这样的idiom. 而且上半句没有用make as, 下半句怎么有个as呢?

后面的that从句如果是跟前面的that从句并列修饰observation的话，不明白为啥不用makes

难道that是修饰powers的，跳跃性修饰？that?