Which of the following is an example of a water-soluble vitamin?

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

Answer: (C)

Vitamin C is indeed an example of a water-soluble vitamin. Water-soluble vitamins are those that can dissolve in water and are not stored in the body, meaning they must be consumed regularly in the diet. Vitamin C, also known as ascorbic acid, plays a critical role in numerous bodily functions, including collagen synthesis, antioxidant protection, and enhancing the immune system. Because it is not stored, excess amounts are excreted through urine, which makes a consistent intake important for maintaining health.

In contrast, the other vitamins listed—Vitamin A, Vitamin D, and Vitamin E—are classified as fat-soluble vitamins. These vitamins are absorbed along with dietary fat and can be stored in the body's fatty tissues and liver, allowing for a more prolonged supply. This distinction is crucial in understanding how different vitamins function in the body and how they should be consumed and managed in a dietary context.