Wood is porous. Wood is buoyant. Wood is light. Wood is magnetic.
I gave my students this multiple choice question: Which statement best explains why a tree branch floats on water?

Only one answer is correct among these 4 choices:
- Wood is porous.
- Wood is buoyant.
- Wood is light.
- Wood is magnetic.

Could you tell me which one is correct?

Wood is buoyant.