Astronauts who are working outside the space shuttle require an audio speaker in their helmets because ________.

Question

PLEASE HELP!!!!!!

Answer 1

A: Space is very noisy, and they cannot hear each other

B: Sound is an electromagnetic wave and does not require a medium to travel through

C: Sound is a mechanical wave and requires a medium to travel through

D: Sound is an electromagnetic wave and has a long wavelength

Answer 2

those are the answer choices

Answer 3

I know its not A.

Answer 4

What have you learned about how sound travels?

Answer 5

I know sound needs to travel through a medium.

So is it C