Answer:
Because it does. No other answer. This is one of those Impossible to Answer questions from college.
The correct answer is B. the hollow box within a violin.
This large, flat piece of wood found in a piano produces the sound when the piano is played, the same way the hollow box produces the sound coming from a violin. The two items have the same purpose, which is to provide the instrument with sound.
Without caffeine, electronics, climate-controlled interiors, pharmaceuticals, artificial light, late-night TV, and other features of modern society that help us override our body's natural signals, hunter-gatherers tend to go “to bed” within a couple of hours of sunset and wake up just before sunriseAnswer:
Explanation: