Question

a builder wants to make a room soundproof in a new home. the builder should use materials that ______. (1 point)○ reflect sound waves and create echoes○ absorb sound waves and create echoes○ absorb sound waves and prevent echoes○ reflect sound waves and prevent echoes

Explanation:

Soundproofing aims to reduce sound transmission. Absorbing sound waves stops them from traveling through or reflecting, and preventing echoes (which are reflected sound) is key to effective soundproofing. Reflecting sound would not block it, and creating echoes is the opposite of soundproofing goals.

Answer:

absorb sound waves and prevent echoes