Which flight control surface does the right yoke operate when pulling the pitch disconnect handle?

When pulling the pitch disconnect handle, the right yoke operates the right elevator. In aircraft with dual controls, the yoke is responsible for controlling the elevator's functions, which are critical for managing the aircraft's pitch attitude. By manipulating the right yoke, a pilot directly influences the position of the right elevator, allowing for adjustments in pitch. This system allows for a coordinated response to the pilot's inputs, making it possible to control the aircraft effectively during flight.

Understanding this function is essential because it illustrates how flight control surfaces are interconnected with the pilot's commands through the flight control systems. The other options—such as the left elevator, rudder, or ailerons—do not directly relate to the function of the right yoke in this particular scenario and could lead to confusion about the control surfaces' roles in the aircraft's operation.