A prominent Naga insurgent group formed in 1980 is the:

National Socialist Council of Nagaland (NSCN)
Naga National Council (NN
c) United Liberation Front of Assam (ULFA)
People's Liberation Army (PLA)

The correct answer is: a) National Socialist Council of Nagaland (NSCN).

The National Socialist Council of Nagaland (NSCN) is a Naga nationalist political party and militant organization in India. It was founded in 1980 by Isak Chishi Swu and Thuingaleng Muivah. The NSCN’s goal is to establish an independent Nagaland, a homeland for the Naga people. The NSCN has been involved in a long-running insurgency against the Indian government.

The Naga National Council (NNC) is a Naga nationalist political party founded in 1946. The NNC’s goal is to achieve Naga independence. The NNC was involved in a ceasefire with the Indian government from 1997 to 2015.

The United Liberation Front of Assam (ULFA) is an Assamese nationalist militant organization founded in 1979. The ULFA’s goal is to establish an independent Assam. The ULFA has been involved in a long-running insurgency against the Indian government.

The People’s Liberation Army (PLA) is a Manipuri nationalist militant organization founded in 1978. The PLA’s goal is to establish an independent Manipur. The PLA has been involved in a long-running insurgency against the Indian government.