How is the front cockpit power control lever (PCL) connected to the fuel management unit (FMU)?

The connection between the front cockpit power control lever (PCL) and the fuel management unit (FMU) is crucial for the operation of the aircraft's engine. The PCL is designed to control the fuel flow to the engine, and this is achieved through a mechanical linkage. As the pilot moves the PCL, this physical action is transmitted directly to the FMU, altering the fuel flow based on the lever's position and providing precise control over engine performance.

Moreover, the FMU uses electronic components to monitor and adjust fuel delivery based on various factors such as engine speed, altitude, and temperature. This combination of mechanical and electrical systems ensures that the pilot's commands through the PCL are executed accurately, optimizing the engine's efficiency and response.

The other options describe different forms of connection that do not accurately reflect how the PCL interacts with the FMU. For instance, a purely hydraulic or pneumatic connection would not provide the necessary direct control and feedback required for effective engine management. Therefore, the combination of mechanical and electrical systems is the correct configuration for the PCL to FMU connection.