Meteorologyeasy#145
At a cold front, the approaching cold air:
A
Rises over the warm air
B
Undercuts the warm air, forcing it upward
CorrectC
Remains stationary
D
Mixes evenly with warm air
Explanation
At a cold front, the denser cold air undercuts the warm air mass, forcing the warm air upward rapidly, often producing cumuliform clouds and heavy precipitation.
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