The correct answer is (a) Japan.
The 2020 Summer Olympics, officially known as the Games of the XXXII Olympiad, were an international multi-sport event that was originally scheduled to take place from 24 July to 9 August 2020 in Tokyo, Japan. However, due to the COVID-19 pandemic, the International Olympic Committee (IOC) announced on 24 March 2020 that the Games would be postponed to 2021. The Games were ultimately held from 23 July to 8 August 2021.
The 2020 Summer Olympics were the first Summer Olympics to be postponed, and the first Olympics to be held in the Northern Hemisphere in August. The Games were also the first Summer Olympics to be held in Japan since 1964.
The 2020 Summer Olympics featured 339 events in 33 sports. The United States finished first in the medal table with 39 gold medals, followed by China with 38 gold medals and Japan with 27 gold medals.