The legislative assembly of Arunachal Pradesh is known as the:

The correct answer is: a) Vidhan Sabha.

The Vidhan Sabha is the legislative assembly of Arunachal Pradesh. It is a unicameral body consisting of 60 members, elected from single-member constituencies. The members are elected for a term of five years. The Vidhan Sabha meets in the capital city of Itanagar.

The Vidhan Sabha is responsible for making laws for the state. It also has the power to approve the budget and to oversee the functioning of the government. The Speaker is the presiding officer of the Vidhan Sabha.

The other options are incorrect because:

• Panchayat Raj is a system of local self-government in India.
• Arunachal Council was a legislative body that existed in Arunachal Pradesh from 1972 to 1987.
• Tribal Council is a council of tribal elders in some parts of India.