Question

A
is when a cool, cold, and warm masses come together and
are expected to follow.

Answer 1

It seems like you're referring to a "front" in meteorology. A front is a boundary between different air masses, such as cool, cold, and warm air. When these air masses meet, various weather phenomena, such as precipitation, changes in temperature, and wind shifts, are expected to follow. There are different types of fronts, including cold fronts, warm fronts, stationary fronts, and occluded fronts, each associated with different weather patterns.