The answer is C: A surfer rides back to the beach on his surf board.
All the others are examples of people doing stuff to the water, C is an example of the water moving something, in this case the water is moving a surfer and his surf board.
The correct answer is C) A surfer rides back to the beach on his surfboard.
Explanation:
This is the best answer because the other choices involve people moving things or moving themselves in a lake or the ocean. So if we want evidence that waves can cause objects to move, the wave must be the active part. Option C is correct because the surfer is passive. He or she is riding the surfboard but the waves are moving him or her.
