What feature helps cabin crew navigate during a power outage on the CRJ 700?

The correct feature that helps cabin crew navigate during a power outage on the CRJ 700 is emergency lights. Emergency lights activate automatically when there is a loss of power, providing crucial illumination throughout the cabin and emergency exits. This ensures that the crew can safely move around the aircraft to assist passengers and manage the situation effectively.

While personal flashlights and signage can also contribute to visibility and guidance, their effectiveness can be limited in situations where the power is completely out. Cabin announcements, while important for communication, do not aid in navigation. Emergency lights are specifically designed to function in emergencies, making them essential for safe operations in low-light situations.