Which service provides advice regarding apron activities to pilots?

The service that provides advice regarding apron activities to pilots is the Apron Advisory Service. This service is specifically designed to assist pilots with information related to the operations that occur on the apron, which is the area of the airport where aircraft are parked, serviced, and loaded. The Apron Advisory Service helps ensure that pilots are aware of any activities that might affect their operations, such as movements of ground vehicles, other aircraft, or potential hazards. This is particularly important for maintaining safety and efficient operations on the ground.

In contrast, Ground Control is primarily responsible for the movement of aircraft on the ground, including taxiing, but may not focus specifically on apron activities. The Flight Service Specialist provides air traffic services and flight planning support but does not typically manage apron activity. Terminal Control generally deals with the en-route phases of flight and ensures safe separation of aircraft during approach and departure, rather than apron activities. Thus, the Apron Advisory Service is the most suitable choice for providing relevant advice directly related to apron operations.