[求助]大全－174

1.        Believed to originate from a small area on their foreheads, elephants emit low-frequency sounds that may be used as a secret language to communicate with other members of the herd.

(A) Believed to originate from a small area on their foreheads, elephants emit low-frequency sounds that may be used

(B) Elephants emit low-frequency sounds that are believed to originate from a small area on their foreheads, and they may use this

(C) Elephants emit low-frequency sounds, believed to originate from a small area on their foreheads, that they may use

(D) Originating, it is believed, from a small area on their foreheads; elephants emit low-frequency sounds they may use（C）

(E) Originating, it is believed, from a small area on their foreheads,

很多前辈讨论过，可是正确答案Ｃ中有一点我想不通，ｔｈａｔ不是可以就近修饰ｆｏｒｈｅａｄｓ，这样不就引起歧义了么？ＮＮ指教！

that 不可以就近修饰foreheads。

that 前面有逗号的。that 不引导非限制性定语从句的。