A cloud releases freezing rain. A tree root breaks apart a rock. Dry weather results in a small harvest. Sediments flow into a bay.
I gave my students this multiple choice question: Which process is the best example of weathering?

Only one answer is correct among these 4 choices:
- A cloud releases freezing rain.
- A tree root breaks apart a rock.
- Dry weather results in a small harvest.
- Sediments flow into a bay.

Could you tell me which one is correct?

A tree root breaks apart a rock.