Question

question 2
where is vitamin d made?
○ skin
○ stomach
○ bones
○ small intestine

Explanation:

Vitamin D is synthesized in the skin when it is exposed to ultraviolet (UV) radiation from sunlight. The skin contains a precursor molecule (7 - dehydrocholesterol) that, upon UV exposure, is converted into vitamin D₃ (cholecalciferol). The stomach is involved in digestion, bones are for support and mineral storage (not vitamin D synthesis), and the small intestine is for nutrient absorption, not vitamin D production.

Answer:

A. Skin