geotropism. photosynthesis. dehydration. blooming.
I gave my students this multiple choice question: Many plants tend to wilt on a hot, sunny day. The most likely cause of this wilting is

Only one answer is correct among these 4 choices:
- geotropism.
- photosynthesis.
- dehydration.
- blooming.

Could you tell me which one is correct?

dehydration.