Explanation

Human bones do not contain Oxygen as a primary component

Human bones are primarily composed of calcium phosphate (Ca₃(PO₄)₂), which contains calcium (Ca) and phosphorus (P).

Bones also contain carbon (C) as they have organic components like collagen.

However, bones do not contain elemental oxygen as a distinct component,

Though oxygen is present in bone compounds (e.g., phosphates and carbonates).