Which vitamin is classified as fat-soluble?

The classification of vitamins into fat-soluble and water-soluble categories is important for understanding how they function in the body and how they should be consumed. Fat-soluble vitamins are those that can be stored in the body's fatty tissue and the liver, allowing them to be utilized over a longer period. The correct answer identifies Vitamin A and D as fat-soluble vitamins.

Vitamin A is crucial for vision, immune function, and skin health, while Vitamin D helps regulate calcium and phosphorus levels in the body, supporting bone health and immune function. Both of these essential vitamins are absorbed alongside dietary fats and can be stored in the body's fatty tissues for use when needed.

In contrast, the other vitamins mentioned are classified as water-soluble. Vitamin C, for example, is essential for collagen synthesis and immune function but cannot be stored in large amounts in the body. Vitamin B12 is vital for nerve function and the production of DNA and red blood cells but also does not fall within the fat-soluble category. Understanding these classifications is crucial for effective nutrition assessment and ensuring adequate intake of these vitamins.