Explanations:The question asks which of the given cities has a metro rail system. To understand this, it is important to know the context of urban transportation in India, particularly the development of metro rail systems in major cities.
A metro rail system is a rapid transit system that operates on dedicated tracks, typically underground or elevated, and serves a large urban area. It is designed to provide fast, efficient, and reliable transportation for a large number of passengers. The development of a metro rail system is a significant milestone for a city, as it indicates a high level of urbanization and the need for advanced public transportation infrastructure.
Among the options provided, Delhi is the only city that has a well-established metro rail system. The Delhi Metro is one of the largest and most extensive metro systems in India. It was the first metro system in the country and has been operational since 2002. The Delhi Metro serves the National Capital Territory of Delhi and its neighboring regions, including Gurgaon, Faridabad, and Noida. It is known for its modern infrastructure, efficient service, and extensive network of lines and stations.
The other cities listed—Ranchi, Lucknow, and Patna—do not have metro rail systems. Ranchi is a city in Jharkhand, Lucknow is the capital of Uttar Pradesh, and Patna is the capital of Bihar. While these cities have other forms of public transportation, such as buses and trains, they have not yet developed metro rail systems. There are plans for metro systems in some of these cities, but as of now, they do not have operational metro rail services.
Understanding the presence of metro rail systems in different cities is important for general knowledge and for competitive exams that test knowledge of urban infrastructure and transportation systems in India. The Delhi Metro, being the first and one of the most extensive systems, is a significant point of reference in this context.