Which vitamin is essential for human blood clotting, where a deficiency causes prolonged hemorrhaging from minor cuts?
Answer and explanation
Correct answer: A. Vitamin K
- Step 1: Vitamin K is a fat-soluble vitamin required by the liver to synthesize prothrombin and other coagulation factors. Step 2. Lack of vitamin K severely impairs the clotting mechanism, causing uncontrolled bleeding. Answer: Vitamin K. Why not the others: Vitamin A maintains eyesight; Vitamin C prevents scurvy and supports collagen; Vitamin D regulates calcium absorption.
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