Answer:
The answer is B: to Amplify the sound
Because the molecules that move freely begin to compact closer together, with less heat, means less molecular activity.
<span>Generally speaking, the level of molecular motion is highest in gases, where molecules move around freely in space, bouncing off of each other, and lowest in solids, where molecules are bound together in a rigid structure. As such, the answer would be A; "the molecules in air move more than the molecules in wood".</span>
