Question

Which vitamin is essential for blood clotting?

• A. Vitamin K
• B. Vitamin D
• C. Vitamin E
• D. Vitamin C

Hint:

Think of the vitamin the liver needs to finish making clotting factors like factor II and factor X.

Answer 1

The Correct Option is A

Step 1: Recall how blood clotting works.
When a blood vessel is injured, the body forms a clot to stop bleeding. This clotting process needs a set of proteins called clotting factors, made mainly in the liver, which act one after another in a chain reaction.

Step 2: Link a vitamin to clotting factor production.
The liver needs Vitamin K to correctly finish making several clotting factors, including factors II, VII, IX and X. Without enough Vitamin K, these factors are made in an incomplete form and cannot work properly, so blood takes much longer to clot and even small cuts may bleed more than usual. This is why Vitamin K is often called the clotting vitamin.

Step 3: Check why the other vitamins do not fit.
Vitamin D mainly helps the body absorb calcium and keeps bones strong; it is not directly tied to clotting factor production.
Vitamin E acts as an antioxidant that protects cell membranes from damage; it does not make clotting factors.
Vitamin C helps in wound healing and collagen formation and boosts immunity, but it does not create clotting factors either.

Step 4: Final conclusion.
Since the liver needs Vitamin K to produce working clotting factors, Vitamin K is the vitamin essential for blood clotting.
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