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1. Multiple Choice: Which vitamin is most critical for blood clotting? a) Vitamin A b) Vitamin C c) Vitamin K d) Vitamin E Answer: c) Vitamin K Rationale: Vitamin K is essential for the synthesis of proteins required for blood clotting, which is crucial in preventing hemorrhage. 2. True/False: The primary source of energy for the brain under normal circumstances is fatty acids. Answer: False Rationale: The brain primarily uses glucose as its energy source; only under prolonged fasting conditions does it utilize ketone bodies derived from fatty acids. 3. Fill-in-the-Blank: _______ is a m
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