Final answer:
The skin that touches, overlaps, and surrounds the nail is called the cuticle. It helps seal the nail edges and prevent infection of the underlying tissues. Therefore, the correct option is 2
Step-by-step explanation:
The skin that touches, overlaps, and surrounds the nail is called the cuticle. The cuticle is a layer of dead epithelial cells that covers the edge of the nail plate. Its purpose is to help seal the edges of the nail to prevent infection of the underlying tissues. The nail fold is another structure that overlaps the nail on the sides, helping to anchor the nail body. The nail fold that meets the proximal end of the nail body forms the cuticle, also called the eponychium.