As air rises, why do clouds form?

a. raindrops converge in the lower troposphere
b. water vapor heats up and creates steam
c. the air cools to its dew-point temperature and condenses into liquid water
d. snow forms in the upper troposphere and becomes visible as clouds

C. the air cools to its dew-point temperature and condenses into liquid water

Explanation:

Clouds are formed when the air rises heated by terrestrial irradiation. As it warms, the air rises and rises until it reaches its dew point, which will be when the water vapor condenses on (dew) or ice crystals. These droplets, which have a spherical shape and measure between 0.004 and 0.1 mm, are in continuous motion when they are suspended in the air and when they are subjected to updrafts, so they collide with each other and group together. Depending on the atmospheric conditions, an increase in their thickness may occur so as to cause them to precipitate.

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