98.8

12.--- that distinguish human beings from mother primates are related to the ability of people to stand upright and walk on two legs.

(A) Many of the physical characteristics

(B) Of the many physical characteristics

(C) The physical characteristics

(D) There are many physical characteristics

A　对显然，C为何不行　请赐教

C选项好像不是这个样子的啊，我看到的版本是(C) The physical

characteristics are many，请楼主查证一下。