If the cloud base is very low, which condition of the near-surface air is generally more likely?

Correct answer: It is relatively humid and close to saturation

Correct answer: A. A low cloud base often indicates that rising near-surface air needs only a small amount of cooling to reach saturation. This is commonly associated with relatively humid air and a small temperature–dew-point difference near the ground. Cloud-base height also depends on temperature and how the air is lifted, so this is a likely association, not an absolute rule.