How does the CRJ perform a roll maneuver?

The correct choice emphasizes the role of ailerons in performing a roll maneuver in the CRJ. Ailerons are primarily responsible for controlling the aircraft's roll axis by introducing differential lift across the wings. When a pilot activates the ailerons, one aileron moves up and the other moves down. The upward-deflected aileron decreases lift on that wing while the downward-deflected aileron increases lift on the opposite wing, which results in the aircraft rolling in the direction of the aileron that is moved down.

Additionally, coordinating aileron inputs with rudder adjustments is crucial. The rudder helps to counteract adverse yaw, a natural tendency of the aircraft to yaw away from the direction of the roll due to the drag created by the aileron that is deflected down. By coordinating aileron and rudder inputs, pilots achieve a more coordinated and controlled roll maneuver, making it smoother and more effective.

The other options do not accurately capture the primary mechanisms involved in performing a roll maneuver. Adjusting elevators and increasing thrust pertains to pitch control rather than roll. Altering engine power on one side could create a yaw effect rather than rolling the aircraft through the bank. Using the yaw damper alone would not