What is wind shear and how can it affect takeoff and landing?

What is wind shear and how can it affect takeoff and landing?

• A. A rapid change in wind speed or direction with height that has no effect on aircraft performance.
• B. A steady wind that remains constant and improves climb performance.
• C. A rapid change in wind speed or direction with height that can cause abrupt loss of airspeed or lift.
• D. A wind that gradually increases lift.

Answer: (C)