Explanation: The Golden Quadrilateral is a significant infrastructure project in India that aims to improve connectivity and economic development by constructing a network of four-lane highways. This project connects four major cities in India: Delhi, Kolkata, Chennai, and Mumbai. The project is designed to form a closed loop, connecting these cities in a quadrilateral shape, hence the name "Golden Quadrilateral."
The Golden Quadrilateral project was initiated in 2001 and was completed in 2012. It covers a total length of approximately 5,846 kilometers and is one of the largest highway projects in the world. The primary objective of this project is to enhance the transportation network, reduce travel time, and boost economic activities by improving connectivity between these major cities.
The cities involved in the Golden Quadrilateral are strategically chosen as they are major economic hubs in India. Delhi is the capital and a significant political and economic center. Kolkata is a major industrial and commercial hub in eastern India. Chennai is a major industrial and IT hub in southern India. Mumbai is the financial capital of India and a major port city.
The project has had a significant impact on the Indian economy by reducing transportation costs, improving logistics, and facilitating the movement of goods and people. It has also contributed to the development of the surrounding areas by creating employment opportunities and boosting local economies.
In conclusion, the correct answer is (B) Delhi-Kolkata-Chennai-Mumbai-Delhi, as it accurately represents the cities connected by the Golden Quadrilateral project. This project is a testament to India's efforts to improve its infrastructure and promote economic development through enhanced connectivity.