Final answer:
Vitamin C can be recommended to improve iron absorption in the body.
Step-by-step explanation:
The vitamin that can be recommended to improve iron absorption in the body is vitamin C. Vitamin C is known to enhance the absorption of non-heme iron, which is the type of iron found in plant-based foods. It helps convert non-heme iron into a form that is easier for the body to absorb. Including vitamin C-rich foods, such as citrus fruits, tomatoes, and peppers, in a meal can greatly improve iron absorption.