Approximately how many quarts of blood are in an average adult human body?

• A. About 5–6 quarts
• B. About 10–12 quarts
• C. About 20–24 quarts
• D. About 1–2 quarts

Answer: (A)

Verified step by step guidance

1. Understand that the problem is asking for an approximate volume of blood in an average adult human body, measured in quarts.
2. Recall that the average adult human body contains about 4.5 to 6 liters of blood, depending on factors like body size and sex.
3. Convert liters to quarts, knowing that 1 liter is approximately equal to 1.057 quarts. Use the conversion formula: \(\text{quarts} = \text{liters} \times 1.057\).
4. Calculate the range of blood volume in quarts by multiplying the lower and upper limits of blood volume in liters by 1.057.
5. Compare the calculated range to the given answer choices to identify the closest approximate volume of blood in quarts for an average adult human.