Question

which condition causes storms to occur? freezing of water droplets sudden change in air pressure condensation of water vapor rapid heating of upper atmosphere

Explanation:

Storms occur due to a sudden change in air pressure. When there is a significant difference in air pressure between two areas, it creates a pressure gradient force. This force causes air to move rapidly from high - pressure areas to low - pressure areas. As the air moves, it can lead to the development of strong winds, which are a key component of storms.
Freezing of water droplets is more related to the formation of ice in clouds rather than the direct cause of storms. Condensation of water vapor is part of the cloud - formation process but not the main cause of storms. Rapid heating of the upper atmosphere is not a common direct cause of storms.

Answer:

sudden change in air pressure