What best describes the nail root?

The nail root is best described as the base of the nail located beneath the skin. This area is crucial as it is where the nail grows, and it is located within the nail matrix, which is the tissue responsible for nail development. The nail root is not visible externally; it exists beneath the cuticle and is covered by the surrounding skin, playing a vital role in the overall health and biology of the nail structure.

The other descriptions do not accurately capture the function or position of the nail root. For instance, stating that it is at the end of the nail refers to a different part of the nail anatomy, while calling it the nail groove or associating it with the hyponychium are mischaracterizations of the nail's various components. The nail groove pertains to the area along the sides of the nail where the nail fold meets the skin, and the hyponychium is the skin under the free edge of the nail. Understanding the proper terminology and anatomy is essential for anyone studying to become a manicurist, as it forms the foundation for best practices in nail care and maintenance.