Apatanis are the major tribal group of

A. Sikkim

B. Arunachal Pradesh

C. Jharkhand

D. Nagaland

Ans. (B) Arunachal Pradesh

Explanation:

The Apatani, or Tanii, are a tribal group of people living in the Ziro valley in the Lower Subansiri district of Arunachal Pradesh in India.