Which is a major essential lipophilic (fat-soluble) vitamin required for the protection of cell membranes and the formation of red blood cells (RBCs)?

Vitamin E

 The correct answer is Option (4)- Vitamin E

The major essential lipophilic (fat-soluble) vitamin required for the protection of cell membranes and the formation of red blood cells (RBCs) is Vitamin E.

Explanation:

• Vitamin E is a fat-soluble vitamin with antioxidant properties. It helps protect cell membranes from oxidative damage caused by free radicals. It also plays a role in immune function and red blood cell formation.
• It plays a crucial role in maintaining the integrity of cell membranes and protecting the body's cells from oxidative stress.
• While other vitamins like Vitamin A, Vitamin C, and Vitamin D have important functions in the body, Vitamin E is specifically known for its antioxidant role in cell membrane protection.

Therefore, the correct answer is Vitamin E.