Answer:
A. A trumpet's sound can make water vibrate by transferring energy to the water nearby.
Step-by-step explanation:
Option A best explains the results of the experiment. The experiment suggests that a trumpet's sound can make water vibrate by transferring energy to the water nearby. This is supported by the observation that the water in the glass vibrated only when the trumpet was close enough for the sound waves to reach it. The sound waves produced by the trumpet create pressure waves in the air that travel to the glass and transfer energy to the water, causing it to vibrate. Option B is not supported by the experiment, as the water in the glass did not vibrate when the trumpet was far away. Option C is also not supported by the experiment, as the air does not absorb the energy from the sound waves produced by the trumpet. Option D is not accurate because the experiment did not indicate that the trumpet's sound could only create energy when it was 1 foot away.