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 responsible for the production of clotting factors:**
- The liver is the primary organ where most of the clotting factors are synthesized. This includes factors such as prothrombin (factor II), and factors VII, IX, and X.

2. **Understand the role of vitamin K in blood coagulation:**
- Vitamin K is essential for the synthesis of several clotting factors. It acts as a cofactor for the enzyme that modifies certain proteins, allowing them to bind calcium ions, which is crucial for their activity in the coagulation cascade.

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