Bones arc made up off largely

A. Iron

B. Sodium

C. Calcium

D. Potassium

Answer: Option C

Solution(By Examveda Team)

A bone is a rigid organ that constitutes the skeleton in most vertebrates. It protects the various organs of our body.
Bones consist of living cells embedded in a mineralized organic matrix. The primary inorganic component of Human bone is hydroxyapatite, the dominant bone material, having the nominal composition of calcium (Ca₁₀(PO₄)₆(OH)₂).