Final answer:
Vitamins are classified as fat-soluble and water-soluble. Fat-soluble vitamins are soluble in fats and oils, while water-soluble vitamins are soluble in water.
Step-by-step explanation:
Vitamins are classified as fat-soluble vitamins and water-soluble vitamins.
Fat-soluble vitamins, such as vitamins A, D, E, and K, are soluble in fats and oils.
Water-soluble vitamins, such as the B complex vitamins and vitamin C, are soluble in water.