The correct option is D seed coat
Integuments are protective envelopes around the ovule. They retain the same function in the seed by hardening into tough protective seed coats.
Pericarp is the wall of the fruit which develops from the wall of the ovary.
Cotyledons are thick swollen structures found in seeds, which act as the stores of food reserves.
Scutellum is a cotyledon (seed leaf) found in the seeds of some plants such as grass and barley.