Which statement best explains how a cyclone forms?
A. Air moves from centers of high pressure toward a center of low
pressure in a spiraling pattern.
B. Cold, dense air flows toward warmer, less dense air, so a cold
front ends up moving faster than a warm front.
C. Two different air masses meet, but neither moves into the other
one.
D. Isobars connect the same pressure readings on a weather map.
