Explanation: Kolkata, located in the eastern part of India, experiences a tropical wet and dry climate, which is influenced by the monsoon season. The monsoon season in West Bengal typically spans from June to September, bringing significant rainfall to the region. This period is crucial for agriculture, water supply, and the overall ecosystem of the area.
The monsoon season in Kolkata is characterized by heavy rainfall due to the southwest monsoon winds that bring moisture from the Bay of Bengal. The average rainfall during this period is approximately 50 inches, which is a substantial amount of water that supports the region's agricultural activities and replenishes water bodies.
Understanding the average rainfall during the monsoon season is important for several reasons:
1. **Agricultural Planning:** Farmers rely on the monsoon rains to irrigate their crops. Knowing the average rainfall helps in planning crop cycles and managing water resources.
2. **Water Management:** The municipal authorities use this data to manage water supply and drainage systems, ensuring that the city is prepared for the influx of water during the monsoon.
3. **Infrastructure Development:** The data on average rainfall is crucial for the design and maintenance of infrastructure, such as roads, bridges, and buildings, to withstand the heavy rains and potential flooding.
It is important to note that while the average rainfall is around 50 inches, there can be variations from year to year due to climate change and other meteorological factors. However, the average provides a reliable benchmark for planning and decision-making.
In conclusion, the correct answer is 50 inches, which represents the average rainfall in Kolkata from June to September, reflecting the significant impact of the monsoon season on the region's climate and water resources.