oxygenation of tissue excretion of toxic wastes transportation of blood cells digestion and absorption of food
I gave my students this multiple choice question: Which best describes the function of the small intestine?

Only one answer is correct among these 4 choices:
- oxygenation of tissue
- excretion of toxic wastes
- transportation of blood cells
- digestion and absorption of food

Could you tell me which one is correct?

digestion and absorption of food