The direction of wind around a low pressure in northern hemisphere is:
Explanation
Option (C) 'anti-clockwise' is correct. According to Table 9.2 in the textbook context, the pattern of wind direction in cyclones (low pressure systems) in the Northern Hemisphere is anticlockwise. The context also explains that in low-pressure areas, the wind blows around the low pressure due to the combined effect of the pressure gradient force and the Coriolis force. The Coriolis force causes deflection, and in the Northern Hemisphere, this results in anticlockwise circulation around a low pressure center. Options (A) 'clockwise' is incorrect as it describes wind direction around a high pressure in the Northern Hemisphere. Options (B) and (D) are incorrect because they describe wind behavior at the equator (perpendicular to isobars) or geostrophic wind in the upper atmosphere (parallel to isobars), not the circular pattern around a low pressure system.