A healthy nail is smooth, curved, translucent, pinkish in color and:

• A. Is without hollows or wavy ridges
• B. Has hollows or ridges
• C. Is white and opaque
• D. Is brittle with ridges

Answer: (A)

Healthy nails show a smooth surface, natural curve, translucence, and a pinkish color caused by the blood vessels beneath. The absence of hollows or wavy ridges is part of that healthy look—hollows or ridges indicate damage, past trauma, or underlying conditions that affect the nail matrix. White and opaque nails can signal other health issues, while brittleness with ridges points to damage, dehydration, or aging. So, the description that a healthy nail lacks hollows or ridges best fits the idea of a well-maintained, healthy nail.