Heat moves from her hand to the ice cube. Cold moves from her hand to the ice cube. Heat moves from the ice cube to her hand. Cold moves from the ice cube to her hand.
I gave my students this multiple choice question: Anna is holding an ice cube. Why does the ice cube melt in her hand?

Only one answer is correct among these 4 choices:
- Heat moves from her hand to the ice cube.
- Cold moves from her hand to the ice cube.
- Heat moves from the ice cube to her hand.
- Cold moves from the ice cube to her hand.

Could you tell me which one is correct?

Heat moves from her hand to the ice cube.