Question

Which is the vitamin that is not normally found in any vegetarian food?

• A. Vitamin $B_{12}$
• B. Vitamin K
• C. Vitamin C
• D. Vitamin D

Answer 1

The correct option is D Vitamin D

Vitamin D is not one chemical but many. The natural type is produced in the skin from a universally present form of cholesterol, 7-dehydrocholesterol. Sunlight is the key. Its ultraviolet B (UVB) energy converts the precursor to vitamin D3. In contrast, most dietary supplements are manufactured by exposing a plant sterol to ultraviolet energy, thus producing vitamin D2. Because their function is almost identical, D2 and D3 are lumped together under the name vitamin D, but neither will function until the body works its magic. Vitamin D is absent in all vegetables. Vitamin B12, K and C are present in fruits and vegetables. Thus, option D is correct and other options are wrong.