The correct answer is: A. root
A potato is a modified form (outgrowth) of a root. It is a tuber, which is a swollen underground stem that stores food. Potatoes are a good source of carbohydrates, dietary fiber, vitamins B6 and C, and potassium. They are also low in calories and fat.
A stem is the part of a plant that grows above the ground. It supports the leaves and flowers, and transports water and nutrients from the roots to the leaves.
A fruit is the seed-bearing structure that develops from the ovary of a flowering plant. Fruits are typically sweet and fleshy, and they are eaten by animals to help disperse the seeds.
A leaf is a green, flattened organ that grows from a stem. Leaves are responsible for photosynthesis, which is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen.