Which of the following describes a normal healthy nail?

A normal healthy nail is characterized by being firm and flexible, with a shiny appearance and a slightly pink hue. This description highlights the optimal balance between strength and resilience in nail structure. Firmness indicates that the nail is strong and durable, while flexibility allows for the nail to withstand stress without breaking. The shiny surface is a sign of proper hydration and care, which often reflects healthy moisture levels, while the slightly pink color suggests a healthy blood supply beneath the nail, showing that the nail matrix is functioning well and there are no signs of underlying health issues.

Other options present characteristics that indicate poor nail health. Soft and brittle nails (the first option) suggest a lack of strength and moisture, which can lead to splitting or tearing. Hard and brittle nails (the third option) may be indicative of over-drying or damage, while nails that are flexible and soft (the last option) are generally not strong enough to protect the nail bed adequately, and a dull, yellow appearance can signify issues such as fungal infections or other conditions affecting nail health.