What is the purpose of the flight control system in an aircraft?

The flight control system in an aircraft is primarily responsible for managing aspects of the plane's trajectory and stability. This system enables the pilot to maneuver the aircraft effectively by controlling its aerodynamic surfaces such as ailerons, elevators, and rudders. Through these controls, the flight control system allows pilots to adjust the aircraft's pitch, roll, and yaw, ensuring safe and stable flight.

The correct choice emphasizes the critical role of the flight control system in maintaining the airplane's stability and trajectory during various phases of flight, including takeoff, cruising, and landing. A well-functioning flight control system ensures that the aircraft responds accurately to the pilot’s inputs, contributing to overall flight safety and performance.

While other options mention important aspects related to aircraft operation, they do not pertain to the specific function of the flight control system. For instance, providing power to the engines, enhancing cabin lighting, or monitoring fuel consumption are handled by entirely different systems within the aircraft, such as the power generation system, cabin management system, and fuel management system, respectively. These functions are essential but are not the main purpose of the flight control system.