Which one of the following vitamins is synthesized in

Solution

Vitamin D is synthesized in the skin when exposed to sunlight (UV rays). The precursor 7-dehydrocholesterol in the skin is converted to Vitamin D3 (cholecalciferol), which is then activated in the liver and kidneys to its functional form. Information Booster:        

1. Known as the "sunshine vitamin."
2. Essential for calcium absorption and bone health.
3. Deficiency can lead to rickets in children and osteomalacia in adults.
4. Found in foods like fatty fish, egg yolks, and fortified milk.