Which system is primarily responsible for ensuring control feedback in flight?

The Bobweight mechanism plays a critical role in enhancing flight safety by providing a feedback control system that helps pilots maintain aircraft stability during flight. It operates by adding a degree of resistance to control inputs, particularly in situations where the aircraft's airspeed is low and the risk of stalling is higher. This mechanism responds to changes in aircraft attitude, and as the aircraft experiences higher loads, the Bobweight increases resistance to the inputs from the control surfaces, thus promoting more measured and controlled handling by the pilot.

In contrast, the other options do not primarily focus on feedback control in the same way. The servo system, while essential for controlling surface movement, mainly translates pilot inputs into mechanical actions but does not provide the specific feedback adjustments that the Bobweight does. Control surface actuators are responsible for physically moving the control surfaces according to pilot commands but lack the system's feedback mechanism inherent to the Bobweight. The flight data recorder serves to collect and preserve flight data for analysis after a flight but does not play an active role in the control process during flight. Through its specific function, the Bobweight effectively ensures that feedback control is maintained, directly influencing flight behavior and stability.