Which of the following vitamin is helpful in the blood clotting?

Blood clotting (coagulation) is a complex process that involves several clotting factors, many of which are proteins synthesized in the liver. Vitamin K plays an essential role in this process.

Vitamin K is required for the synthesis of prothrombin and other clotting factors (Factors II, VII, IX, and X) in the liver. It acts as a cofactor for the enzyme that catalyzes the carboxylation of glutamic acid residues in these clotting factor proteins, converting them to gamma-carboxyglutamic acid, which is essential for their calcium-binding ability and biological activity.

Without adequate Vitamin K, blood clotting is impaired, leading to excessive bleeding. This is why Vitamin K is administered to newborns to prevent hemorrhagic disease.

Vitamin C is involved in collagen synthesis and immune function. Vitamin E is an antioxidant. Vitamin B complex is involved in various metabolic processes. None of these are directly involved in blood clotting.

The correct answer is Option 3: Vitamin K.