The correct answer is C. Mitosis.
Hoped this helped.
-Davismr00.
Answer:
An atom is stable if the forces among the particles that makeup the nucleus are balanced. An atom is unstable (radioactive) if these forces are unbalanced; if the nucleus has an excess of internal energy. Instability of an atom's nucleus may result from an excess of either neutrons or protons.
Explanation:
You should reask this question and put a picture so that we can understand it better :)