Which of the following is true about the cuticle?

The cuticle plays a crucial role in nail health, particularly in protecting the nail matrix, which is the tissue where new nail growth occurs. The cuticle is a layer of dead skin that overlaps the base of the nail and serves as a barrier against bacteria and other pathogens that could lead to infections. By shielding the nail matrix, the cuticle helps ensure that nails grow healthy and strong, minimizing the risk of damage that could disrupt the growth process.

While the other choices touch on some aspects related to nails, they do not accurately describe the primary function of the cuticle in the same way. For example, while the cuticle does have a role in preventing moisture loss and sealing the nail bed to some extent, these are not its primary functions. The most significant aspect is its protective role, which is essential for maintaining the integrity of the entire nail structure.