What provides the change to the camber of the wing?

• A. Slats
• B. Flaps
• C. Ailerons
• D. Spoilers

Answer: (A)

Camber is the curvature of the wing surface, and increasing it boosts lift at a given airspeed. Extending the leading-edge slats changes the wing’s shape by creating a more pronounced curvature at the front and by forming a slot between the slat and the wing. This leads to higher lift, especially at low speeds and high angles of attack, and helps delay stall. Flaps also increase lift by deflecting the trailing edge, but the question focuses on what changes the wing’s camber, and leading-edge devices like slats are the primary way that camber is increased in this context. Ailerons control roll, and spoilers reduce lift; neither of those changes the wing’s camber.