How much blood is there in a normal adult human being?
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500 ml to 800 ml
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4.5 l to 5.5 l
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12 l to 15 l
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19 l to 22 l
B
Correct answer
Explanation
A normal adult human body contains approximately 4.5 to 5.5 liters (about 5-6 quarts) of blood, which is roughly 7-8% of total body weight. This volume is essential for transporting oxygen, nutrients, hormones, and waste products throughout the body. Significant blood loss beyond 1-1.5 liters can be life-threatening.