The sun warms the ground. A hot oven warms a cold kitchen. A campfire warms a person's hands. Hot soup warms a metal spoon handle.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Heat transfer is part of everyday life. Which of these examples involving heat transfer occurs mainly by conduction?
Possibilities:
- The sun warms the ground.
- A hot oven warms a cold kitchen.
- A campfire warms a person's hands.
- Hot soup warms a metal spoon handle.

Hot soup warms a metal spoon handle.