How do sound waves travel? Sound waves radiate outward from a central point.

Sound moves randomly in different directions.

Sound causes the air near it to vibrate inwards.

Sound transforms waves into different frequencies.
please give right answer!

Sound waves move by vibrating objects and these objects vibrate other surrounding objects, carrying the sound along. The further away from the original source of a sound you are, the waves lessen until they don't have the strength to vibrate any other particles.

Explanation:

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

vapour or gas assuming atmospheriv pressure