lack of sunlight lack of oxygen lack of water lack of food
I gave my students this multiple choice question: A tropical rain forest contains many tall trees. Smaller plants with large leaves grow at the base of the tall trees. The large leaves are most likely an adaptation of the plant due to which condition?

Only one answer is correct among these 4 choices:
- lack of sunlight
- lack of oxygen
- lack of water
- lack of food

Could you tell me which one is correct?

lack of sunlight