Adding a vitamin C-rich food to a meal containing plant-source iron demonstrates which nutrition principle?

Supporting nutrient absorption

Plant foods mainly provide non-haem iron, whose absorption can be limited. Vitamin C helps convert iron into a form that is more readily absorbed and can also reduce the effect of some inhibitors. Combining foods in this way is an example of a beneficial nutrient interaction and improves the nutritional value of the meal.

This is a Class 11 Home Science question. Chapter: Concerns and Needs in Diverse Contexts. Topic: Principles of environmental, personal, and food hygiene.