The correct option is Northwest India and Far South.
Explanation
During the cold weather season (winter) in India, atmospheric pressure distribution is primarily determined by thermal factors. There is an inverse relationship between temperature and pressure: regions with lower temperatures develop high pressure, while warmer regions maintain relatively lower pressure.Analysis of Pressure Distribution:
- Northwest India (Highest Pressure): During winter, the sun is in the Southern Hemisphere. Northwest India experiences the lowest temperatures due to its high latitude within the tropics, distance from the moderating influence of the sea (continentality), and cold winds from the north. This thermal low creates a high-pressure system. Typically, the highest pressure isobars (e.g., 1019 mb or 1018 mb) traverse Northwest India.
- Far South (Lowest Pressure): The southern peninsula remains relatively warm due to its proximity to the equator and the moderating effect of the surrounding oceans. Consequently, the pressure here is lower compared to the north. The lowest pressure isobars (e.g., 1013 mb) typically traverse the Far South.
Conclusion:
The pressure gradient slopes from North to South. Therefore, the highest pressure isobars are found in Northwest India, and the lowest pressure isobars are found in the Far South.
Key Takeaway:
In the Indian winter, the pressure gradient runs from the high-pressure landmass in the North to the lower-pressure zones in the South, driving the Northeast Trade Winds (Winter Monsoon) from land to sea.