How does latitude affect the creation of air masses in tropical, temperate, and polar zones?

Explanation:

Air masses form primarily in high pressure zones, most commonly in polar and tropical regions. ... Instead, air masses move across temperate zones so the middle latitudes are prone to having interesting weather. The source regions of air masses found around the world.

im pretty sure its none of them

all 4 come together due to gravity

all objects have gravity, even atoms

but their gravitational force is very low and it takes a long time for them to become closer together