Question

Which is most likely to cause clouds to form in a previously clear sky?

An air mass sinks and becomes warmer.
An air mass sinks and becomes colder.
A colder air mass moves into the area and rises.
A warmer air mass moves into the area and rises.

Answer 1

[AI-generated answer — Bot GPT 3.5]

A warmer air mass moving into the area and rising is most likely to cause clouds to form in a previously clear sky. When warmer air rises and meets cooler air, it cools and condenses, forming clouds.