What is the function of the cuticle?

The cuticle serves the important function of protecting the nail bed from infection. It acts as a barrier that prevents pathogens and debris from entering the area where the nail grows, thereby safeguarding the delicate skin underneath. The cuticle is made up of thin layers of skin that cover the base of the nail, and its presence helps to keep the environment around the nail healthy. By preventing contaminants from getting into the nail bed, the cuticle contributes to overall nail health and hygiene. This protective role is essential in maintaining the integrity of the nail as it grows.

The other choices do not accurately reflect the primary role of the cuticle. It does not directly aid in nail growth, add color to the nail, or provide moisture; instead, its primary importance lies in protection from infection.