Questions: Which of the following is the most important role of vitamin K ? a.) Urine formation b.) Lung health c.) Liver disease prevention d.) Blood clotting

The answer is the fourth one (d): Blood clotting.

Explanation for each option: a.) Urine formation - This is not a primary role of vitamin K. Urine formation is primarily related to kidney function and involves processes such as filtration, reabsorption, and secretion. b.) Lung health - While vitamins and nutrients are important for overall health, vitamin K is not specifically known for its role in lung health. c.) Liver disease prevention - Although the liver is involved in the metabolism of vitamin K, its primary role is not in the prevention of liver disease. d.) Blood clotting - This is the correct answer. Vitamin K is essential for the synthesis of certain proteins required for blood coagulation (clotting). Without adequate vitamin K, the blood clotting process is impaired, which can lead to excessive bleeding.

Summary: Vitamin K plays a crucial role in blood clotting, making option (d) the most important role of vitamin K.