energy. heat. motion. water.
I gave my students this multiple choice question: A student is playing with a small toy boat on a pond. The student throws a rock in the pond. This creates waves that move the boat toward the shore. The boat moves toward the shore because the waves transfer

Only one answer is correct among these 4 choices:
- energy.
- heat.
- motion.
- water.

Could you tell me which one is correct?

energy.