What are indications of abnormal primary flight control operations?

The correct choice indicates a range of potential issues with the primary flight control system that can manifest during flight. Uncommanded pitch, roll, or yaw refers to situations where the aircraft begins to maneuver in ways that were not directed by the pilot, suggesting a failure in the control system or a significant aerodynamic issue. Sluggish flight control response indicates that the aircraft is not responding efficiently or predictably to pilot inputs, which can compromise handling and safety.

These symptoms are critical indicators of underlying problems that could lead to loss of control, making it essential for pilots to recognize and react to them promptly. In contrast, the other options, while they do describe issues related to flight performance, do not encompass the full range of normal control input monitoring that would indicate broader control system concerns.