Which statement best describes a characteristic of maritime polar air masses?

this is ans.

Explanation:

Continental Polar air masses (cP) are air masses that are cold and dry due to their continental source region. ... Polar air masses develop over higher latitudes over the land or ocean, are very stable, and generally shallower than arctic air.

rising temperatures because when water vapor in the air is cooled, it condenses. it turns back into a liquid and attaches to dust particles in the air. these very small water droplets group together to form clouds

its temperature is increasing. this causes molecular vibrations to increase.