Answer:
D) Report the problem to your supervisor.
Explanation:
This is probably the most efficient way get them to stop or to get them to follow the rules <3
The air resistance and gravity pulling it down
https://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/introduction-to-sound-waves-ap/v/production-of-sound
BTW- i am a teacher and recently used this video to explain
The measure of the amount of matter an object contains is its mass.