Which flight control does the right yoke operate when pulling the roll disconnect?

The right yoke primarily operates the ailerons when pulling the roll disconnect. This action is crucial during situations where the control of the aircraft's roll axis is being challenged, such as during an emergency or when there is a malfunction with the flight control systems. By using the ailerons, the pilot can effectively manage the roll of the aircraft, allowing for coordinated turns and maintaining level flight.

While multifunction spoilers might assist in controlling the roll, they are not directly manipulated by the yoke in the same manner as ailerons, and the other options, such as nosewheel steering and elevators, pertain to different flight axes and control mechanisms. Therefore, the correct association of the right yoke with the operation of the ailerons demonstrates its role in maintaining control over the aircraft's lateral dynamics.