The tea becomes saturated. The ice cubes gain energy. The tea's freezing point increases. The ice cube's melting point decreases.
I gave my students this multiple choice question: Which statement best explains why ice cubes will melt in a glass of tea?

Only one answer is correct among these 4 choices:
- The tea becomes saturated.
- The ice cubes gain energy.
- The tea's freezing point increases.
- The ice cube's melting point decreases.

Could you tell me which one is correct?

The ice cubes gain energy.