What restriction applies to doors into rooms used by residents?

The correct choice emphasizes the importance of resident safety and autonomy within nursing home environments. In facilities where residents live, it is critical for them to have the ability to exit their rooms freely, especially in case of emergencies. If doors were locked from the outside while a resident is inside, it could create a dangerous situation where a resident cannot access help or leave their room during a crisis.

This regulation is designed to balance safety and the right of residents to maintain personal freedom. While there may be scenarios where locking doors is necessary for certain security measures, it is essential that these do not infringe upon the residents' rights to access their environment safely when they are present in their rooms.

The other options do not meet the core necessity of ensuring both safety and accessibility for residents. Having doors locked at all times might create unnecessary hazards, while requiring power-operated doors or inward-swinging doors may not be practical or necessary for every room setup. Thus, ensuring that doors cannot be locked from the outside when residents are inside is integral to maintaining a safe and supportive living environment for them.