What happens in a nuclear fission reaction

Look at the  third one i think its the answer 

Nuclear fission is when the nucleus of an atom splits into two or more smaller nuclei, which are referred to as "fission products". Neutrons and energy are released as a product of this process. The fission of heavy atoms/elements is an exothermic reaction and releases a lot of energy.

The modern-day generator works on the principle of electromagnetic induction discovered by michael faraday in 1831-32. faraday discovered that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field.