How many gallons of emergency potable water does the medical room hold?

The correct answer indicates that the medical room can hold 300 gallons of emergency potable water. This capacity is designed to ensure that there is an adequate supply of clean drinking water available for medical emergencies or other urgent situations that may arise. The specification of 300 gallons reflects the needs for a medical facility where a sufficient volume of water is crucial for both patient care and operational procedures.

This amount allows for hydration of patients and staff, as well as providing water for basic sanitation and hygiene practices, which are essential in a medical environment. Other capacities, such as 150, 450, or 600 gallons, are not typically standard for a medical room's emergency water supply, emphasizing that the 300-gallon figure is both practical and aligned with common facility designs in medical settings.