Where does fission regularly occur and what kind of energy is produced?

a. fission occurs inside the sun. it creates the light and heat that sustain life on earth.
b. fission occurs when fossil fuels are burned. the energy can be used to produce electricity.
c. fission occurs in a nuclear power plant. the energy produced comes in the form of heat.
d. when wood burns, fission occurs. the energy produced is light and heat.