to absorb water into a cell to provide energy for a cell to remove wastes from a cell to store materials in a cell
I gave my students this multiple choice question: What is the primary reason for breaking down food molecules?

Only one answer is correct among these 4 choices:
- to absorb water into a cell
- to provide energy for a cell
- to remove wastes from a cell
- to store materials in a cell

Could you tell me which one is correct?

to provide energy for a cell