An example of a fat-soluble vitamin is ___.

Fat-soluble vitamins are those that can be stored in the body's fatty tissues and liver, and they require dietary fat for absorption. Vitamins K, D, and A are all classified as fat-soluble vitamins because of their ability to dissolve in fats and oils, allowing them to be absorbed along with dietary fat.

Vitamin K plays a crucial role in blood clotting and bone metabolism, making it essential for overall health. It is found in various foods, particularly green leafy vegetables, and is absorbed efficiently in the presence of dietary fat. Therefore, identifying vitamin K as a fat-soluble vitamin highlights its characteristics of solubility in fat and the physiological processes it supports.

In contrast, vitamin C is water-soluble, which means it dissolves in water and is not stored in the body in significant amounts, necessitating regular consumption to meet the body's needs. Understanding the distinction between fat-soluble and water-soluble vitamins is key for nutritional education and dietary planning, especially in equine health or any living organism.