The correct answer is: d) Mizoram State Planning Board.
The Mizoram State Planning Board (MSPB) is the primary institution responsible for formulating development plans in Mizoram. It was established in 1973 by the Government of Mizoram to promote economic development and social justice in the state. The MSPB is headed by the Chief Minister of Mizoram and has a membership of 25 members, including representatives from the government, the private sector, and civil society.
The MSPB is responsible for preparing the state’s five-year plans and annual plans. It also coordinates the implementation of development projects and monitors the progress of development in the state. The MSPB is a key player in the development of Mizoram and has played a significant role in the state’s economic growth and social progress.
The other options are incorrect because they are not the primary institution responsible for formulating development plans in Mizoram. The Finance Department is responsible for managing the state’s finances, the Chief Minister’s Office is responsible for providing policy direction to the government, and the Planning & Program Implementation Department is responsible for implementing development projects.