Correct Answer:
C. Vitamin K
The correct answer is Vitamin K. This vitamin is essential for the synthesis of several proteins, known as clotting factors, which are produced in the liver and are crucial for blood coagulation. Without adequate Vitamin K, the blood's ability to clot effectively is severely impaired, leading to prolonged bleeding.
- Vitamin A is primarily involved in vision, immune function, and cell growth, not blood clotting.
- Vitamin B refers to a group of vitamins vital for metabolism, energy production, and nerve function, but they do not directly facilitate blood clotting.
- Vitamin D is crucial for calcium absorption, bone health, and immune system regulation, but it has no direct role in blood coagulation.