The correct answer is: a) Barytes and limestone.
Barytes is a heavy, white mineral that is used in a variety of industrial applications, including the manufacture of paints, plastics, and paper. Limestone is a sedimentary rock that is composed primarily of calcium carbonate. It is used in a variety of construction applications, including the manufacture of cement and concrete.
The other options are incorrect. Mica is a mineral that is used in a variety of electrical and electronic applications. Uranium is a radioactive metal that is used in the production of nuclear energy. Copper is a metal that is used in a variety of electrical and electronic applications. Gold is a precious metal that is used in jewelry and other decorative items.
The Rayalaseema region of Andhra Pradesh is located in the southern part of the state. It is a hilly region with a dry climate. The region is known for its deposits of barytes and limestone.