Which weather condition is associated with atmospheric pressure that decreases with altitude?

The correct choice is related to high winds and is associated with atmospheric pressure that decreases with altitude. As altitude increases, the weight of the air above decreases, resulting in lower atmospheric pressure. This phenomenon influences wind behavior; high winds often occur when there are significant pressure differences over distance in the atmosphere.

These pressure differences can lead to the movement of air from areas of high pressure to areas of low pressure, resulting in wind. In contrast, fog can form in stable air conditions where pressure changes are minimal, and rain typically occurs when moisture-laden air rises and cools, leading to condensation rather than directly linking to changes in atmospheric pressure with altitude. Sunny days often indicate stable air with little vertical movement, which does not highlight the effects of decreasing pressure with increasing altitude. Thus, the connection between high winds and declining pressure with altitude makes this condition the most appropriate choice.