What is the primary function of the AAP?

The primary function of the AAP, or Aircraft Attendant Panel, is to control lighting for the AFT galley and main cabin. This system allows cabin crew to manage the cabin atmosphere and provides flexibility in adjusting the lighting according to different phases of the flight, such as boarding, service, and nighttime conditions. Proper lighting is critical for both the comfort of passengers and the operational efficiency of the cabin crew.

While other systems may play important roles in cabin operations, they are not the main focus of the AAP. Passenger announcements generally use a different system, and air conditioning controls are typically managed separately to ensure the passenger environment remains comfortable. Seatbelt signs, while vital for safety, are also handled independently from the AAP functions. Therefore, option B accurately captures the main responsibility of the AAP in the cabin environment.