kinetic energy to potential energy heat energy to kinetic energy potential energy to chemical energy chemical energy to mechanical energy
I gave my students this multiple choice question: Which energy conversion happens when a person shivers and the energy is transferred to make the muscles and joints move?

Only one answer is correct among these 4 choices:
- kinetic energy to potential energy
- heat energy to kinetic energy
- potential energy to chemical energy
- chemical energy to mechanical energy

Could you tell me which one is correct?

chemical energy to mechanical energy