What is one of the critical functions of a flight control system?

The flight control system is essential for maintaining the aircraft's ability to maneuver effectively and safely in the air. One of its primary functions is to control the aircraft's movements and stability during flight. This involves managing various control surfaces such as ailerons, elevators, and rudders to ensure the aircraft responds appropriately to pilot inputs and external conditions.

By controlling these surfaces, the flight control system enables the aircraft to achieve and maintain desired attitudes, speeds, and flight paths, ultimately contributing to safe and efficient operations in all phases of flight. This function is critical for both routine flying and unexpected situations, enhancing the overall safety and control of the aircraft.

The other options, while important in their own rights—like providing updates or managing passenger conditions—do not relate directly to the fundamental role of controlling the aircraft during flight.