Which describes nuclear fission?(1 point)

Responses

starts when a neutron slams into an atom, causing two atoms to form one, heavier atom
starts when a neutron slams into an atom, causing two atoms to form one, heavier atom

starts when two atoms slam together, causing the larger atom to split into two smaller atoms
starts when two atoms slam together, causing the larger atom to split into two smaller atoms

starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms
starts when a neutron slams into an atom, causing the larger atom to split into two smaller atoms

starts when two atoms slam together to form one, heavier atom

starts when the larger atom splits into two smaller atoms