If the control stick is moved rearward and to the left, how will the right aileron respond?

When the control stick is moved rearward and to the left, it indicates that the pilot is attempting to maneuver the aircraft to the left and possibly initiate a turn. This movement will affect the ailerons on both wings—the right aileron and the left aileron.

Specifically, when the stick is moved to the left, the left aileron will move down while the right aileron will move up. This differential movement is crucial for creating a roll about the longitudinal axis of the aircraft. The upward movement of the right aileron decreases the lift on that wing, while the downward movement of the left aileron increases lift on that wing, causing the aircraft to roll left.

Additionally, as the stick is pulled back (rearward), this input typically causes the elevator to move, allowing the aircraft to pitch up as well. This combined effect of rearward and leftward movement creates a left roll and an upward pitch.

Thus, in this context, the right aileron moves down as part of executing the left roll maneuver, making this choice the correct answer.