the mass of a leaf the volume of its sap the length of a branch the temperature of its bark
I gave my students this multiple choice question: Mrs. Gordon's class studies maple trees. Which property can the students measure with a meter stick?

Only one answer is correct among these 4 choices:
- the mass of a leaf
- the volume of its sap
- the length of a branch
- the temperature of its bark

Could you tell me which one is correct?

the length of a branch