Which statement about air masses and fronts is correct?
a)
only a front is the movement of a weather system.
b)
an air mass is a large body of air that takes on the characteristics of the area over which it forms, while a front is a narrow region separating two air masses of different densities.
c)
a front takes on the characteristics of the area over which it forms, while an air mass is a narrow region separating two different densities areas.