Which of the following describes a way the propeller is feathered?

Feathering the propeller is a critical procedure used to minimize drag in the event of an engine failure. The correct response highlights that when the engine is intentionally shut down with the power control lever (PCL) in the normal position, the Propeller Management Unit (PMU) actively signals the servo valve. This action effectively adjusts the pitch of the propeller blades to a feathered position, which aligns them parallel to the airflow, reducing drag and ensuring that the aircraft can maintain better aerodynamic efficiency even with one engine inoperative.

The process described in this option is part of the automatic systems' function designed to optimize the aircraft's performance during critical phases of flight, making it the correct explanation of how propeller feathering occurs.