Question

Of the following ways, which one does NOT cause a cloud to form?

A. Air cooling to the dew point overnight
B. Warm air moving across a cooled surface
C. Warm air being forced up over a cold front
D. An air mass warming as it is forced over a mountain

Answer 1

The answer is B-warm air moving across a cooled surface

Answer 2

I think it's B (Warm air moving across a cooled surface) or D (An air mass warming as it is forced over a mountain).