vegetables are rich source of

Answer: Option C

Vegetables are a rich source of minerals.
Vegetables are parts of plants that are consumed by humans or other animals as food. The original meaning is still commonly used and is applied to plants collectively to refer to all edible plant matter, including flowers, fruits, stems, leaves, roots and seeds.
Foods that naturally are nutrient-rich include fruits and vegetables. They supply dietary fiber and are important sources of essential vitamins, minerals, and trace elements. Particularly important are the antioxidant vitamins A, C and E.