Explanation:

The Nagaland government has decided to form a joint consultative committee (JCC) involving all traditional tribal bodies and, civil society organisations for taking an exercise to register the State’s indigenous inhabitants.

• The JCC will be headed by Home Commissioner Abhijit Sinha and include members from the Central Nagaland Tribes’ Council, Eastern Nagaland People’s Organisation and the Tenyemie People’s Organisation.
• Abhijit Sinha Committee is made responsible for preparing the Register of Indigenous Inhabitants of Nagaland (RIIN).

Hence option 1st is correct.