Answer:
Sound waves from a shout move back and forth between canyon walls.
Step-by-step explanation:
When waves are reflected from the given target then in that case the the energy is bounced back into the same direction from which it is incident upon the target
So here in case of reflection of wave the energy is not absorbed by the surface but it is bounced back.
Also the energy is not transmitted from the given target
So here in this case the correct option must be
Sound waves from a shout move back and forth between canyon walls.
Since the waves are moving back and fourth between the walls then here we can say that energy is reflected back and fourth.