What is the primary advantage of wiring lights and receptacles in a room on different circuits?

The primary advantage of wiring lights and receptacles in a room on different circuits is that it ensures that not all power in a room will go out if the overcurrent protective device trips. This is especially important in residential settings where losing power to the entire room can be inconvenient and potentially hazardous. By having lights on a separate circuit from receptacles, if there is an overload or short circuit in one circuit, the other circuit can continue to function normally. This allows for safer and more reliable usage of electrical devices and lighting in a home, as occupants can still use part of the room without interruption even when one part encounters an issue.

While other options might touch on related concepts, they do not directly address the critical safety and functionality aspect provided by separating circuits for lights and receptacles.