What plant part are you eating when you eat an apple?

When you eat an Apple, you are consuming the fruit of the Apple tree, which is the reproductive part of the plant. The fruit develops from the flower after pollination and contains seeds, which are the plant's means of reproduction. Additionally, the flesh of the Apple is derived from the ovary wall of the flower, providing nourishment to the seeds. Thus, the Apple is a mature ovary that has developed into a sweet, edible structure.