Sleep takes up about blank______ of our lives.

• A. one-fourth
• B. one-third
• C. one-half
• D. two-thirds

Answer: (B)

Verified step by step guidance

1. Understand the question is asking about the proportion of our lives spent sleeping.
2. Recall general psychological and biological research findings on human sleep patterns.
3. Recognize that on average, humans sleep about 8 hours per day.
4. Calculate the fraction of 24 hours spent sleeping: \( \frac{8}{24} \).
5. Simplify the fraction to find the proportion of life spent sleeping, which corresponds to one-third.