Final answer:
Vitamin E (d-alpha-tocopherol succinate) is a fat-soluble vitamin. Fat-soluble vitamins are stored in the body, while water-soluble vitamins, such as vitamin C, must be consumed daily.
Step-by-step explanation:
The option that correctly describes vitamin E (d-alpha-tocopherol succinate) is a) Vitamin E is a fat-soluble vitamin. Vitamin E, also known as tocopherol, is an essential nutrient with a characteristic double ring structure known as the chromane ring. It serves as a powerful antioxidant both in the body where it helps protect cells from damage caused by free radicals, and in food to prevent fats from becoming oxidized.
Vitamins are categorized into two groups: fat-soluble and water-soluble vitamins. The fat-soluble vitamins include vitamins A, D, E, and K. These vitamins are stored in the body's fatty tissues and the liver. In contrast, water-soluble vitamins, such as vitamin C and the B complex vitamins, need to be taken in daily because they are not stored in the body.
To answer the student's other question, the water-soluble vitamin among the options provided is d) vitamin C.