Which of the following vitamins is mainly responsible for blood coagulation in human being?

Correct answer: (a) Vitamin K

Explanation

Vitamin K is essential for blood coagulation (clotting) and reverses blood-thinners like warfarin.

It is found in green leafy vegetables, broccoli and Brussels sprouts.

Vitamin A aids vision, Vitamin C prevents scurvy, and Vitamin E is an antioxidant.