An air-mass source region: a. may consist of both land and water. b. is generally an area characterized by a cyclonic circulation pattern. c. is best typified by the central United States. d. is characterized by a general stagnation of atmospheric circulation.
d. is characterized by a general stagnation of atmospheric circulation.
Explanation:
An air mass is a part of the earth surface where the air can be stagnant and then gradually decline and gradually gain the peoples on the underlying surface and becomes a source region and the main source regions are the high-pressure area in the subtropics and gives rise to the subtropical air mass and the around the poles. It has a stagnant properties of the atmospheric circulation.
