What waveguide compressor subsystem controls operation of airflow and indicates normal or malfunction conditions?

The correct choice identifies the waveguide compressor subsystem that plays a crucial role in managing airflow as well as signaling whether the system is functioning normally or experiencing a malfunction. The electrical subsystem is integral because it encompasses the control systems and feedback mechanisms that monitor airflow conditions and performance parameters of the compressor.

In an operational context, various sensors and electrical components work together to provide real-time data about airflow, pressure, and temperature. These components are essential for maintaining efficiency and safety within the system. When there are deviations from normal operating conditions, the electrical subsystem can trigger alarms or alerts, thereby indicating whether the system is functioning as intended or if there are issues that need addressing.

Considering the other options, the filter primarily serves to remove contaminants from the airflow, while the display is responsible for presenting information to the operator but does not control the airflow directly. The airflow component itself refers to the physical movement of air through the compressor, which is managed by the electrical controls. Therefore, the electrical subsystem emerges as the core element that not only controls but also monitors and indicates system status effectively.