Which components are affected by the CAS system in the aircraft?

The correct answer highlights that the CAS (Crew Alerting System) is primarily concerned with the aircraft's flight control systems. The CAS plays a crucial role in monitoring the status and operation of various flight control systems and provides alerts and indications to the flight crew when there are malfunctions or abnormal conditions.

In aircraft operations, flight control systems include the ailerons, elevators, and rudders, which are vital for controlling the aircraft's attitude, direction, and stability. The CAS ensures that any issues within these systems are communicated promptly to the pilots, allowing them to take corrective actions as necessary to maintain safe flight and to manage the aircraft effectively.

While the CAS may have some indirect influence on other aircraft components like fuel management or engine operations — for instance, alerts related to engine performance might affect handling — its primary focus is to monitor and report on flight control systems, making this choice the most accurate reflection of the CAS's impact.