Which of the following is true about waves? A.
They are always visible.
B.
They always move matter.
C.
They carry energy.
D.
They can only travel though outer space.

C. they carry energy

Explanation:

Energy can be carried from one place to another by waves, including water, light, and sound waves. Waves are oscillating disturbances that travel through but do not move matter.

Infrared radiation escaping from hot coals is an example of invisible waves carrying energy. This energy can be felt as heat.

hurricanes form in warm water

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.