Explanation: Haldia is a significant port located in the state of West Bengal, India. It is situated at the confluence of two important rivers: the Hugli (also known as Hooghly) and the Haldi. The Hugli River is a distributary of the Ganges, and the Haldi River is a tributary of the Hugli. The confluence of these rivers creates a deep-water channel that can accommodate larger ships, which is a critical feature of the Haldia port.
The Haldia port was developed to address the limitations of the Kolkata port, which is located further upstream on the Hugli River. The Kolkata port, while historically significant, has shallow waters that restrict the size of ships that can dock there. Haldia, being downstream, has deeper waters and can handle larger vessels, making it an essential part of the region's maritime trade.
The development of Haldia as a major port has several advantages:
1. **Economic Growth**: It supports the economic growth of West Bengal by facilitating international trade.
2. **Strategic Location**: Its location at the confluence of two rivers makes it a natural hub for maritime activities.
3. **Infrastructure Development**: The port has led to the development of related infrastructure, including roads, railways, and industrial zones.
4. **Employment**: It provides employment opportunities for the local population.
Understanding the geographical and economic significance of Haldia is crucial for comprehending the maritime landscape of West Bengal. The port's role in handling larger ships that cannot enter the Kolkata port underscores its importance in the region's trade and commerce.
In summary, Haldia is the correct answer because it is the only port among the options that is located in West Bengal, situated at the confluence of the Hugli and Haldi rivers, and designed to accommodate larger ships that cannot navigate the shallower waters of the Kolkata port. This makes it a vital component of West Bengal's maritime infrastructure.