An older adult's fingernails appear concave and spoon shaped.The nurse associates this observation with:

A) Normal finding in older adults
B) Chronic lung disease
C) An iron deficiency
D) Chronic heart disease

Concave

A shape or surface that curves inward or is hollowed out, as opposed to being convex or protruding.

Spoon Shaped

Describing an object or form that resembles the shape of a spoon, often used in medical contexts to describe certain types of deformities or conditions.

Iron Deficiency

A condition resulting from insufficient iron in the body, leading to a decrease in the production of hemoglobin, which can cause anemia.