Explanations:Kolkata, the capital city of West Bengal, is a significant urban center in India, known for its rich cultural heritage, economic importance, and strategic location. The term "linked" in the context of the question refers to the various modes of transportation and communication that connect Kolkata to other parts of the country. This connectivity is essential for the city's role as a major economic and cultural hub.
The connectivity of Kolkata to other parts of the country is facilitated through a well-developed network of transportation systems. The city is served by the Kolkata Metro, which is the oldest underground railway system in India, and a vast network of suburban and long-distance railways. The Sealdah and Howrah railway stations are major hubs that connect Kolkata to various parts of the country. Additionally, Kolkata is well-connected by roadways, with the Grand Trunk Road and other national highways passing through the city, providing access to different regions of India.
Furthermore, Kolkata is home to Netaji Subhas Chandra Bose International Airport, which is one of the busiest airports in India, offering both domestic and international flights. This air connectivity ensures that Kolkata is linked to major cities across the country and the world. The city also has a significant port, the Kolkata Port Trust, which plays a crucial role in the city's maritime trade and connectivity.
It is important to understand that the term "linked" in this context does not imply a direct or permanent connection, but rather a network of connections that facilitate movement and communication. The term "joined" (Option A) would imply a more direct and permanent connection, which is not the appropriate term to describe the connectivity of Kolkata to other parts of the country. The term "religious" (Option C) is irrelevant to the question, as it does not pertain to the city's connectivity. Lastly, "separated" (Option D) contradicts the fact that Kolkata is well-connected to other parts of the country through various means of transportation.