The correct answer is D. London.
The 2012 Summer Olympics, officially known as the Games of the XXX Olympiad, were an international multi-sport event held from 27 July to 12 August 2012 in London, England. It was the 30th Olympiad of the modern era, and the first Summer Olympics to be held in London since 1908. A total of 204 nations competed in 302 events in 26 sports.
The 2012 Olympics were the most watched event in global television history, with an estimated 9 billion people watching at least some of the Games. The United States finished first in the medal table, with 104 medals, including 46 gold medals. China finished second with 88 medals, including 32 gold medals. Great Britain finished third with 65 medals, including 29 gold medals.
The 2012 Olympics were a success for London, both in terms of the Games themselves and the economic impact they had on the city. The Games were also a success for the athletes, who competed in some of the most exciting and memorable events in Olympic history.