答案应该是c或者没有, Google上搜到的句子是Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities. 一般独立主格,与主句形成松散的逻辑关系,形式为: N. +n.;n.+ -ed/-ing形式;n.+介词短语;n.+形容词短语。本题应该是 n.+-ed的独立主格结构
Sound can travel through water for enormous distances, prevented from dissipating its acoustic energy by boundaries in the ocean created by water layers of differing temperatures and densities.