What is the primary function of elevators on an aircraft?

The primary function of elevators on an aircraft is to raise or lower the aircraft's nose. Elevators are located on the tail and are part of the horizontal stabilizer. When a pilot deflects the elevators upward, the tail is pushed down, causing the nose of the aircraft to rise; conversely, deflecting them downward pushes the tail up, causing the nose to lower. This control over the pitch of the aircraft is crucial for managing ascent and descent during flight.

Other options address functions that are associated with different control surfaces or systems within the aircraft. For instance, roll movements are primarily controlled by ailerons, while thrust is generated by engines rather than control surfaces. Stabilization during turbulence involves a combination of flight design and control systems, not solely the elevators' function. Thus, while all these aspects are important for the overall maneuverability and stability of an aircraft, the specific role of elevators is focused on changing the pitch angle.