protect the plant. absorb water and minerals. remove waste products. take in food for the plant.
I gave my students this multiple choice question: A function of a plant's roots is to

Only one answer is correct among these 4 choices:
- protect the plant.
- absorb water and minerals.
- remove waste products.
- take in food for the plant.

Could you tell me which one is correct?

absorb water and minerals.