Final answer:
The subject of this question is Social Studies, specifically rules and regulations related to sleeping. The correct answer is option B: Dormitories, 11 PM, 7 AM.
Step-by-step explanation:
The subject of this question is Social Studies, as it pertains to rules and regulations related to sleeping. The question is asking about the specific areas where sleeping is allowed, as well as the prohibited hours for sleeping unless there is a valid reason.
The correct answer is option B. Dormitories are the designated areas where sleeping is allowed. Sleeping is prohibited between the hours of 11 PM and 7 AM, unless made necessary by sickness or injury.