By examining a surface map, the movement of a surface low pressure area can be predicted because
a. low-pressure areas tend to move parallel to isobars of the warm sector.
b. lows tend to move toward the area with the greatest pressure.
c. movement is the same as it was during the previous 24 hours.
d. once a low is established it always moves toward the east at double the original speed.
e. current weather in the region will remain the same.
ANSWER: a
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