Which part of a fruit is comprised of the endosperm, embryo, and seed coat?

The seed is the correct answer because it is specifically composed of three main parts: the endosperm, the embryo, and the seed coat. The endosperm serves as the nutrient storage tissue, providing essential resources for the developing embryo during germination. The embryo is the young plant that will eventually grow into a new plant once the seed germinates. The seed coat is the protective outer layer that safeguards the embryo and endosperm until conditions are favorable for growth.

The other options relate to different components of a fruit. The pericarp refers to the entire fruit wall, which is further divided into layers such as the exocarp, mesocarp, and endocarp, but does not specifically point to the seed structure. The mesocarp is the middle layer of the pericarp, typically fleshy or fibrous in fruits like peaches, while the exocarp is the outer layer that we may interact with, such as the skin of a fruit. Therefore, none of these components include the structures that specifically define a seed.