What is primarily associated with low pressure and wind changes?

The correct answer is hurricanes because they are large-scale weather systems characterized by low pressure at their center. This low-pressure area causes a significant wind gradient, leading to strong winds that spiral inward towards the storm's center. The intense low-pressure system is a driving force behind the behavior of the winds in a hurricane, resulting in the potential for severe weather conditions, heavy rainfall, and storm surges when they make landfall.

While tornadoes also involve low pressure and are associated with wind changes, they are localized and generally occur within severe thunderstorms rather than being organized systems like hurricanes. Thunderstorms can produce shifting winds, but their primary association is with short-term weather events rather than sustained wind patterns typical of hurricanes. Heat waves, on the other hand, are characterized by high pressure and do not involve significant wind changes. Thus, hurricanes are the best choice for being primarily associated with low pressure and wind changes on a broader scale.