Question

what happens to the water vapor in an air mass as it ascends?
o it freezes.
o it condenses.
o it vaporizes.
o it polarizes.

Explanation:

As air mass ascends, it cools due to lower pressure at higher altitudes. When the air cools, the water vapor within it reaches its dew - point temperature and changes from a gas to a liquid state, which is called condensation. Freezing occurs at much lower temperatures and is not the primary process here. Vaporization is the opposite of what happens as the vapor is becoming a liquid. Polarization has no relation to the behavior of water vapor during ascent.

Answer:

It condenses.