Correct Answer:
D. Vitamin E.
The vitamin known as Tocopherol is Vitamin E. Vitamin E is a group of eight fat-soluble compounds, which include four tocopherols (alpha, beta, gamma, and delta) and four tocotrienols. Among these, alpha-tocopherol is the most biologically active form in humans and is widely recognized for its crucial role as an antioxidant. It helps protect cell membranes from damage caused by free radicals, which are unstable molecules that can harm cells and contribute to aging and various diseases. This protective function is vital for maintaining overall cell health and immune function.
- Option A, Vitamin A, is known by names such as retinol, retinal, and retinoic acid, and is essential for vision, immune function, and cell growth.
- Option B, Vitamin C, is known as ascorbic acid, a water-soluble vitamin vital for collagen synthesis, immune defense, and as an antioxidant.
- Option C, Vitamin D, is known as calciferol (including cholecalciferol and ergocalciferol) and is crucial for calcium absorption, bone health, and immune system regulation.