Question

A builder wants to make a room soundproof in a new home. The builder should use materials that _____.(1 point)
Responses

reflect sound waves and create echoes

absorb sound waves and create echoes

absorb sound waves and prevent echoes

reflect sound waves and prevent echoes

Answer 1

I think its A but i am not sure

Answer 2

If he create echoes wats the point of making it sound proof!

Answer 3

The builder should use materials that absorb sound waves and prevent echoes.