Which one of the following does NOT belong to the category of fat-soluble vitamins?

Vitamin C does not belong to the category of fat-soluble vitamins. Instead, it is classified as a water-soluble vitamin. Fat-soluble vitamins, including Vitamins A, D, and E, are absorbed along with dietary fat and can be stored in the body’s fatty tissues and liver. This storage capability allows fat-soluble vitamins to accumulate, which is important for their biological functions over time. For example, Vitamin A plays a critical role in vision and immune function, Vitamin D is essential for calcium absorption and bone health, and Vitamin E acts as an antioxidant protecting cells from damage. In contrast, water-soluble vitamins like Vitamin C are not stored in the body and need to be consumed more regularly, as excess amounts are excreted in urine. This distinction helps explain why Vitamin C is correctly identified as the one that does not belong to the fat-soluble vitamin category.