Correct Answer: Fission reaction

Solution : The correct option is Fission reaction.

Fission is the process of dividing an atom's nucleus into two or more smaller nuclei while simultaneously releasing a significant quantity of energy. Highly energetic particles and electromagnetic radiation, including gamma rays, may be released as a result of this process.  A considerable amount of ionizing radiation is released during a fission process, which can harm live tissue and genetic material. This is why controlled fission reactions are used in nuclear power plants and nuclear weapons, which need to be handled carefully and shielded to avoid radiation damage.