The correct answer is (a) Barytes.
Andhra Pradesh is a leading producer of barytes in India. Barytes is a heavy, white mineral that is used in a variety of industrial applications, including the manufacture of paints, plastics, and ceramics. It is also used in the
oil and gas industry to improve the efficiency of drilling operations.Coal is a fossil fuel that is used to generate electricity and to produce steel. Iron ore is a mineral that is used to make iron and steel. Copper is a metal that is used in a variety of applications, including electrical wiring, plumbing, and construction.
Barytes is the leading mineral produced in Andhra Pradesh, followed by coal and iron ore. Copper is not a major mineral produced in Andhra Pradesh.