Wind can be defined as –

✅ Explanation: Wind is simply air that is moving. This movement is caused by differences in air pressure. When air in one area is warmer, it rises, creating an area of low pressure. Cooler air from a high-pressure area then moves in to fill the space, creating wind.

📌 Other Options Explanations:
-Option A (A thunderstorm): A thunderstorm is a weather event characterized by lightning, thunder, and heavy rain.
Key Points
-When hot air rises, cold air from the surrounding area rushes there to fill in the gap.
-The movement of air caused by temperature or pressure is called wind.
-Air sets in motion due to differences in pressure at different places.
-Hot air is lighter and less dense than cold air.
-The direction of the wind is affected by the rotation of the earth.