Till 20 January 1972, which present-day Indian state was known as the North-East Frontier Agency (NEFA)?

Sikkim Arunachal Pradesh Nagaland Assam

Arunachal Pradesh

The correct answer is Option 2 - Arunachal Pradesh Till 20 January 1972, the present-day Indian state known as the North-East Frontier Agency (NEFA) was Arunachal Pradesh.