The most frequent type of ground or surface-based temperature inversion is that produced by _______ .
A.radiation on a clear, relatively still night
B.warm air being lifted rapidly aloft in the vicinity of mountainous terrain
C.the movement of colder air under warm air, or the movement of warm air over cold air
D.the widespread sinking of air within a thick layer aloft resulting in heating by com-pression
正确答案是A