What is the most abundant mineral in bones?Group of answer choicescalciumoxygenmagnesiumiron

The most abundant mineral in bones is calcium.

Bones are primarily composed of a matrix of collagen fibers and a mineral component that provides strength and rigidity. The mineralized part of bone is largely made up of hydroxyapatite, which is a crystalline structure that consists mainly of calcium phosphate.

Calcium plays a critical role in bone health; it not only contributes to the structure and density of bones but is also vital in various physiological functions, including muscle contraction, blood clotting, and nerve transmission. While other minerals such as magnesium, iron, and trace elements are present in bones, their quantities are significantly less than that of calcium.

To summarize, among the given options, calcium is the mineral that is present in the highest concentration in the skeletal system.