Final answer:
By calculating 33% of 24 hours, we find that a day's sleeping time is about 7.92 hours, which is roughly 8 hours.
Step-by-step explanation:
The student's question is about determining approximately how many hours a day are spent sleeping based on the given percentages of time spent on various activities. Since there are 24 hours in a day, we can calculate the number of hours spent sleeping by taking the percentage of time spent sleeping and applying it to the total hours in a day. Sleeping accounts for 33% of the time. Therefore, the calculation would be 0.33 × 24 hours = 7.92 hours, which we can round to approximately 8 hours. The answer would be option C. 8 hours.