Answer:
c
Explanation:
The correct answer is (c) air pressure.
Changes in air pressure can cause changes in wind speed. Wind is the movement of air from high pressure to low pressure areas, and the greater the difference in pressure between two areas, the stronger the wind will be. When there is a high-pressure system, the air is denser and cooler, so it sinks towards the surface. This creates an area of high pressure at the surface. Conversely, when there is a low-pressure system, the air is warmer and less dense, so it rises away from the surface. This creates an area of low pressure at the surface.
Therefore, a change in air pressure, such as the approach of a high-pressure system or a low-pressure system, is likely to result in a change in wind speed.