The correct answer is: National Register of Citizens (NRC).
The National Register of Citizens (NRC) is a register of citizens of India. It was first prepared in 1951, and has been updated since then. The NRC is used to identify Indian citizens and to prevent illegal immigration.
The Aadhaar is a 12-digit unique identification number issued to Indian residents by the Unique Identification Authority of India (UIDAI). The Aadhaar is not a proof of citizenship, but it is used as a proof of identity.
The Voter ID is a photo identity card issued to Indian citizens who are eligible to vote. The Voter ID is not a proof of citizenship, but it is used as a proof of identity and address.
The Border Security Force (BSF) is a paramilitary force of India that is responsible for guarding the country’s borders. The BSF is not involved in identifying and addressing illegal immigration.
The NRC is a controversial program, and there have been protests against it. Some people believe that the NRC is discriminatory, and that it is being used to target Muslims. Others believe that the NRC is necessary to protect India’s borders and to prevent illegal immigration.