red giant supernova neutron star white dwarf
I gave my students this multiple choice question: The stages of evolution of a star are determined by the mass of the star at the beginning of its life cycle. Which stage of evolution is the oldest form of a massive star?

Only one answer is correct among these 4 choices:
- red giant
- supernova
- neutron star
- white dwarf

Could you tell me which one is correct?

neutron star