Question

sound waves are an example of what type of wave?
longitudinal
electromagnetic
transverse
surface
clear my selection

Explanation:

Sound waves propagate by compressing and rarefacting the medium (like air), where particle motion is parallel to wave propagation. Longitudinal waves have this characteristic. Electromagnetic waves don't need a medium, transverse waves have particle motion perpendicular to wave direction, and surface waves are a combination (e.g., water waves) – sound isn't these. So sound waves are longitudinal.

Answer:

A. Longitudinal