Which of the following is true about light waves and sound waves? A. Sound waves can move at different speeds, but light waves always move at the same speed. B. Light waves can move at different speeds, but sound waves always move at the same speed. C. They each travel at different speeds when moving through different materials. D. Sound waves and light waves travel at the same speed through different materials.

C

Explanation:

Sound waves speed up noticeably when moving through a solid or liquid, because all it is is just particles colliding; and particles are way closer together with those states of matter.

The speed of light can change when moving through different substances, but this is dependent on complicated factors such as frequency, polarization, intensity, et. cetera

The important part is that it does change speed, so your answer is C.

Hope this helps!

mass and volume are the answers you are looking for