(A) China
(B) India
(C) USA
(D) Japan
Correct Option is: D
On December 1, 2023, the largest experimental nuclear fusion reactor in the world went online in Japan. This technology is still in its early stages, but some believe it will provide the energy that mankind will require in the future. As opposed to fission, which is still employed in nuclear power plants, fusion involves the fusion of two atomic nuclei rather than the splitting of one.