Which control surface would you manipulate to achieve a roll to the right?

To achieve a roll to the right, the ailerons are the control surfaces that need to be manipulated. Ailerons are located on the outer wings of an aircraft and are specifically designed to control the roll movement around the aircraft's longitudinal axis.

When the pilot moves the control stick or yoke to the right, the right aileron deflects upward while the left aileron deflects downward. This creates a differential lift across the wings — the left wing generates more lift, while the right wing generates less lift, causing the aircraft to roll to the right. This action is crucial for executing bank turns and maintaining controlled flight attitude.

In contrast, elevators control pitch (nose up or nose down), rudders affect yaw (left or right movement of the nose), and flaps are used primarily to increase lift at lower speeds, particularly during takeoff and landing. Thus, for rolling the aircraft, ailerons are the correct control surface to manipulate.