The correct answer is: a) Uranium.
Uranium is a radioactive mineral that is found in the earth’s crust. It is used to produce nuclear energy. Andhra Pradesh is one of the states in India that has reserves of uranium.
Thorium is another radioactive mineral that is found in the earth’s crust. It is not as widely used as uranium, but it has the potential to be used to produce nuclear energy. Andhra Pradesh does not have reserves of thorium.
Plutonium is a radioactive metal that is produced by nuclear fission. It is not found in nature, but it can be produced in nuclear reactors. Andhra Pradesh does not have reserves of plutonium.
Radium is a radioactive metal that is found in nature. It is used in medical treatments and in some industrial applications. Andhra Pradesh does not have reserves of radium.