Lightning strikes a building. A fire burns down a house. Electricity heats an oven. The wind blows down a sign.
I gave my students this multiple choice question: Which statement describes how energy can be helpful?

Only one answer is correct among these 4 choices:
- Lightning strikes a building.
- A fire burns down a house.
- Electricity heats an oven.
- The wind blows down a sign.

Could you tell me which one is correct?

Electricity heats an oven.