In what organ are most of the clotting factors produced? What is the role of vitamin K in blood coagulation?

Explanation

**Step-by-Step Solution:**

1. **Identify the Organ for Clotting Factor Production:**
- The majority of clotting factors are produced in the liver. The liver is a vital organ responsible for synthesizing many proteins, including those necessary for blood coagulation.

2. **Understand the Role of Vitamin K:**
- Vitamin K plays a crucial role in blood coagulation. It is essential for the activation of several clotting factors. Without vitamin K, the clotting factors cannot function properly, leading to impaired blood coagulation.

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