Which element is commonly activated during low-speed flight for better control?

In low-speed flight, flaps are commonly activated to improve the aircraft's control and stability. When flaps are extended, they increase the wing's surface area and curvature, which enhances lift. This is particularly beneficial during phases of flight such as takeoff and landing, where slower speeds are typical and greater lift is needed to avoid stalling. The additional lift generated by the flaps allows the aircraft to maintain controlled flight at lower airspeeds, making it easier for pilots to maneuver during critical phases.

Counterweights are usually associated with balancing control surfaces like ailerons and elevators but do not play a direct role in enhancing control during low-speed flight. Vertical stabilizers contribute to directional stability and control but are less effective in changing the lift characteristics during low speeds compared to flaps. Navigation lights serve an entirely different purpose by improving visibility and safety while in the air, having no direct impact on an aircraft's control during flight.