The correct answer is (a) Australia.
Australia has the world’s largest uranium reserves, followed by Kazakhstan, Canada, and Niger. The country’s uranium reserves are estimated to be 231,000 tonnes, which is about 30% of the world’s total. Australia’s uranium reserves are located in a number of different states, including South Australia, Western Australia, and Queensland.
Kazakhstan is the second largest country in the world by uranium reserves, with an estimated 190,000 tonnes. The country’s uranium reserves are located in the east of the country, in the Akmola, Karaganda, and Kostanay regions.
Canada is the third largest country in the world by uranium reserves, with an estimated 163,000 tonnes. The country’s uranium reserves are located in a number of different provinces, including Saskatchewan, Ontario, and Quebec.
Niger is the fourth largest country in the world by uranium reserves, with an estimated 100,000 tonnes. The country’s uranium reserves are located in the north of the country, in the Agadez region.
Uranium is a radioactive metal that is used in nuclear power plants. It is also used in some medical treatments and in the production of nuclear weapons.