The correct answer is option 3, Canada. Canada is the leading producer of uranium globally. Uranium is a key fuel used in nuclear power plants to generate electricity. Canada has significant uranium reserves and is known for its well-established mining industry. The country has several operating uranium mines, particularly in the province of Saskatchewan. Canada`s uranium production accounts for a significant portion of the global supply, making it the top producer.

Option 1, Russia, is not the leading producer of uranium. While Russia does have uranium reserves and produces uranium, its production is lower compared to Canada.

Option 2, France, is not the leading producer of uranium. France is known for its nuclear power generation capacity but is not a significant producer of uranium. France obtains its uranium from various countries, including Canada, to meet its nuclear energy needs.

Option 4, Australia, is not the leading producer of uranium. Australia is also a significant producer of uranium, but its production falls behind Canada. Australia has large uranium reserves and is an important player in the global uranium market, but it is not the leading producer when compared to Canada.