Which vitamin is part of the fat-soluble group?

Vitamin D is classified as a fat-soluble vitamin, which means it can be dissolved in fats and oils and is stored in the body’s fatty tissues and liver. Fat-soluble vitamins, including A, D, E, and K, generally require dietary fats for absorption and are absorbed along with dietary lipids in the gastrointestinal tract.

In contrast, the other options — Vitamin B2 (riboflavin), Vitamin C (ascorbic acid), and Vitamin B12 (cobalamin) — are categorized as water-soluble vitamins. Water-soluble vitamins dissolve in water and need to be consumed more regularly because they cannot be stored in significant amounts in the body; any excess is typically excreted through urine. Understanding this classification helps in recognizing the different roles and storage capabilities of the various vitamins in human nutrition.