The correct answer is B. Fruits.

Apples, grapes, and oranges are all fruits. Fruits are the sweet, fleshy part of a plant that contains the seeds. They are usually eaten raw, but can also be cooked or made into juice, jam, or other preserves.

Vegetables are the edible parts of plants that are not the fruit. They can be eaten raw or cooked, and are often used in salads, soups, and stews.

Stems are the long, thin parts of plants that support the leaves and flowers. They are usually not eaten, but can be used to make tea or other herbal remedies.

Oats are a type of cereal grain that is used to make oatmeal, oat flour, and other oat products. They are not a fruit, vegetable, or stem.