What are sound waves and how do they help us to hear?

A
Sound waves are vibrations that interact with the skin on your eardrums so you can hear things.

B
Sound waves are nerves that travel along our spinal cord to our eardrum.

C
Sound waves are messages from our brain that are interpreted by the eardrum.

D
Sound waves are noises that come in from the environment, and your brain interprets the noises and send them to your eardrum.