Arunachal Pradesh achieved full statehood on 20 February 1987. It was previously a union territory. The state is located in the northeastern part of India and is bordered by China, Bhutan, Nagaland, Assam, and Myanmar. The capital of Arunachal Pradesh is Itanagar. The state has a population of over 1.3 million people and is home to a diverse range of ethnic groups. The official language of Arunachal Pradesh is English. The state is a popular tourist destination, known for its natural beauty and its unique culture.
Option (a), 1975, is incorrect. Arunachal Pradesh was not a state in 1975. It was a union territory.
Option (b), 1987, is the correct answer. Arunachal Pradesh achieved full statehood on 20 February 1987.
Option (c), 1992, is incorrect. Arunachal Pradesh was already a state in 1992.
Option (d), 2000, is incorrect. Arunachal Pradesh was already a state in 2000.