Approximately how many quarts of blood does the average adult human have?

• A. About 20 quarts
• B. About 5 quarts
• C. About 10 quarts
• D. About 1 quart

Answer: (B)

Verified step by step guidance

1. Understand that the question is asking for the approximate volume of blood in an average adult human, which is a factual knowledge-based question rather than a calculation problem.
2. Recall that the average adult human body contains about 4.5 to 5.5 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.
4. Multiply the average blood volume in liters by the conversion factor to get the volume in quarts: \(\text{Blood volume (quarts)} = \text{Blood volume (liters)} \times 1.057\).
5. Recognize that this conversion results in approximately 5 quarts of blood in the average adult human, which matches the correct answer.