electrical energy and light energy. electrical energy and mechanical energy. thermal energy and light energy. thermal energy and mechanical energy.
I gave my students this multiple choice question: An automobile engine transforms chemical energy of fuel primarily into

Only one answer is correct among these 4 choices:
- electrical energy and light energy.
- electrical energy and mechanical energy.
- thermal energy and light energy.
- thermal energy and mechanical energy.

Could you tell me which one is correct?

thermal energy and mechanical energy.