The first floor is considered safe for a bedroom because it is:

The first floor is considered safe for a bedroom because it is more accessible in emergencies. Being on the first floor provides ease of access for both occupants and emergency responders. In cases of fire or other emergencies, individuals can evacuate more quickly without needing to navigate stairs, which is especially important for people with mobility issues. Accessibility is a critical factor in emergency preparedness and response, as it can significantly influence the safety and outcomes during a crisis.

Other options do not enhance safety in the same way; proximity to the kitchen, distance from exits, or temperature considerations do not prioritize safety during an emergency. Therefore, the option emphasizing accessibility directly addresses the fundamental concern of evacuation and safety.