Q: You are presented with the quiz "What do cars use for energy?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "an automobile engine transforms chemical energy into mechanical energy" and "gasoline is a mix of hundreds of chemicals". So, what's the best answer to the question?

Options are: I. engines II. Energy. III. heat IV. Gasoline V. energy VI. fossil fuels VII. coal VIII. photons
A:
IV.