Niacin is a type of vitamin. Which option best identifies this?

Niacin is a type of vitamin. Which option best identifies this?

• A. Vitamin A
• B. Vitamin B
• C. Vitamin C
• D. Vitamin D

Answer: (B)

Niacin is a water-soluble member of the B vitamin family, specifically vitamin B3. It functions as a coenzyme in energy metabolism, helping convert carbohydrates and fats into usable energy through compounds like NAD and NADP. Because of this role, it belongs to the B-complex vitamins rather than the other vitamin groups listed. For contrast, vitamin A is mainly about vision and cell health, vitamin C acts as an antioxidant and supports collagen, and vitamin D helps with calcium balance and bone health. Therefore, identifying Niacin as vitamin B is the best choice.

Niacin is a water-soluble member of the B vitamin family, specifically vitamin B3. It functions as a coenzyme in energy metabolism, helping convert carbohydrates and fats into usable energy through compounds like NAD and NADP. Because of this role, it belongs to the B-complex vitamins rather than the other vitamin groups listed. For contrast, vitamin A is mainly about vision and cell health, vitamin C acts as an antioxidant and supports collagen, and vitamin D helps with calcium balance and bone health. Therefore, identifying Niacin as vitamin B is the best choice.