Complete question:
On a surface weather chart for the United States, which of the following would normally be observed in the vicinity of a surface low pressure center?
a. Isobars are spaced relatively far apart
b. Precipitation reported in surface observations
c. Light winds reported in surface observations
d. Surface observation wind directions illustrate counter-clockwise air flow around the low pressure center
Answer: Surface observation wind directions illustrate counter-clockwise air flow around the low pressure center. (Option D)
Explanation: Surface observation wind directions illustrate counter-clockwise air flow around the low pressure center (cyclone). In vicinity like this, pressure measured is low compared to its surroundings and hence, horizontal direction away from the cyclone will cause pressure increment.