Blood clotting vitamin is:

Options

A. Vitamin-K
B. Vitamin-A
C. Vitamin-`B_(12)`
D. Vitamin-`B_(6)`

Answer

**Step-by-Step Solution:**

1. **Understanding Blood Clotting**: Blood clotting is a crucial process that prevents excessive bleeding when injuries occur. It involves a series of biochemical reactions that lead to the formation of a clot.

2. **Identifying Vitamins Involved in Blood Clotting**: Several vitamins play different roles in bodily functions, including blood clotting. The vitamins mentioned are Vitamin A, Vitamin B6, Vitamin B12, and Vitamin K.

3. **Role of Each Vitamin**:
- **Vitamin A**: Primarily involved in vision and maintaining healthy skin and mucous membranes.
- **Vitamin B6**: Important for brain development and function, as well as the production of neurotransmitters.
- **Vitamin B12**: Essential for red blood cell formation, neurological function, and DNA synthesis.
- **Vitamin K**: Specifically involved in the blood clotting process.

4. **Mechanism of Vitamin K in Clotting**: Vitamin K is necessary for the synthesis of certain proteins known as clotting factors, which are essential for blood coagulation. One of the key proteins is prothrombin, which is converted into thrombin during the clotting process. Thrombin then helps in forming a mesh-like structure that constitutes the blood clot.

5. **Conclusion**: Based on the roles of the vitamins discussed, the vitamin that is specifically associated with blood clotting is Vitamin K.

**Final Answer**: The blood clotting vitamin is Vitamin K.

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