It releases acid and mixes food. It aids in absorption of nutrients from food. It carries food from the mouth to the stomach. It carries food from the stomach to the intestines.
I gave my students this multiple choice question: Which best describes the role of the esophagus in digestion?

Only one answer is correct among these 4 choices:
- It releases acid and mixes food.
- It aids in absorption of nutrients from food.
- It carries food from the mouth to the stomach.
- It carries food from the stomach to the intestines.

Could you tell me which one is correct?

It carries food from the mouth to the stomach.