Generalized Global Air Circulation and Precipitation Patterns Are Dependent on the Intensity

Multiple Choice

Generalized global air circulation and precipitation patterns are dependent on the intensity of solar radiation near the equator.Which of the following correctly states an event that contributes to the creation of these global patterns?

A) rising,warm,moist air masses at 30 degrees north and south
B) rising air masses that expand and cool in the tropical regions
C) rising cool,moist air masses at 90 degrees north and south
D) rising air masses that expand and warm in temperate regions