How does the wind typically behave when wind shear occurs?

When wind shear occurs, it is characterized by sudden and significant changes in wind speed and direction over a short distance. This phenomenon can happen at various altitudes and is particularly common near weather fronts, thunderstorms, and the boundaries of air masses. In the context of aviation, wind shear can pose serious challenges during takeoff and landing, as the sudden shifts can affect lift and control of the aircraft.

In contrast, options suggesting a consistent flow or a complete abatement of wind do not align with the definition of wind shear. If the wind were to become more turbulent, that may be a consequence of wind shear, but turbulence itself isn't a defining characteristic of wind shear. Instead, the focus is on the abrupt and erratic nature of the wind changes, making the recognition of sudden shifts essential for pilots to maintain safety and adequate response strategies while navigating through such conditions.