求助， 一道sc 题

Coins

Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy as a result of boundaries in the ocean created by water layers of different temperatures and densities.

A.        prevented from dissipating its acoustic energy as a result of
B.        prevented from having its acoustic energy dissipated by
C.        its acoustic energy prevented from dissipating by
D.        its acoustic energy prevented from being dissipated as a result of
E.        preventing its acoustic energy from dissipating by


答案是C 明白其他的都不对 但是!
请问大佬们，两个句子之间不是必须要用连词连接么，为什么这里可以没有fanboys。。。

Coins

喵喵喵？
help？