potential energy to electrical energy electrical energy to potential energy kinetic energy to chemical energy chemical energy to mechanical energy
I gave my students this multiple choice question: Which energy transformation takes place in a gasoline lawn mower?

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

Could you tell me which one is correct?

chemical energy to mechanical energy