They have a high water content. They are the best source of protein. They are rich in minerals and vitamins. They are the best source of carbohydrates.
I gave my students this multiple choice question: What is the BEST reason for including fruits and leafy vegetables in a healthy diet?

Only one answer is correct among these 4 choices:
- They have a high water content.
- They are the best source of protein.
- They are rich in minerals and vitamins.
- They are the best source of carbohydrates.

Could you tell me which one is correct?

They are rich in minerals and vitamins.