Which of the following is a water-soluble vitamin?

Vitamin C is classified as a water-soluble vitamin, which means it dissolves in water and is not stored in large amounts within the body. This solubility impacts its absorption and the way it is utilized in various metabolic processes. Water-soluble vitamins, including Vitamin C, need to be consumed regularly in the diet to maintain adequate levels, as the body excretes any excess that is not used. Vitamin C plays crucial roles in functions such as collagen synthesis, antioxidant protection, and immune support.

In contrast, the other vitamins listed—Vitamin A, D, and E—are fat-soluble. Fat-soluble vitamins are stored in the body's fatty tissues and liver, and their absorption is reliant on the presence of dietary fats. This difference in solubility influences not only dietary recommendations but also the ways in which these vitamins can be supplemented and the potential health implications of deficiency or excess.