The correct answer is: d) All of the above.
Arunachal Pradesh has the potential to develop mineral-based industries like graphite processing, cement manufacturing, and refractory units.
Graphite is a mineral that is used in a variety of products, including batteries, lubricants, and refractories. Arunachal Pradesh has large deposits of graphite, and the state government has been promoting the development of a graphite processing industry.
Cement is a building material that is made from limestone, clay, and sand. Arunachal Pradesh has limestone deposits, and the state government has been promoting the development of a cement manufacturing industry.
Refractories are materials that are used to line furnaces and other high-temperature equipment. Arunachal Pradesh has clay deposits, and the state government has been promoting the development of a refractory industry.
The development of these mineral-based industries would create jobs and boost the economy of Arunachal Pradesh.