Which one of the following Central Public Sector Enterprises is a "Navratna"?

Mahanagar Telephone Nigam Limited

The correct answer is Option (4) → Mahanagar Telephone Nigam Limited

Central Public Sector Enterprises (CPSEs) in India are classified into Maharatna, Navratna, and Miniratna categories based on performance and autonomy granted by the Government of India (Department of Public Enterprises).

• Indian Oil Corporation Limited (IOCL): Maharatna status (one of the top-tier CPSEs with highest autonomy).
• Steel Authority of India Limited (SAIL): Maharatna status.
• Central Coalfields Limited (CCL): Subsidiary of Coal India Limited; holds Miniratna Category-I status.
• Mahanagar Telephone Nigam Limited (MTNL): Holds Navratna status (granted in 1997 and retained as of 2025, despite financial challenges).

As of late 2025, there are approximately 26 Navratna CPSEs, and MTNL is included in official and recent lists. Thus, the Navratna among the options is Mahanagar Telephone Nigam Limited.