108. 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