what will a medium - mass star become at the very end of its life cycle?\no a red giant\no a black hole\no a…

Brief Explanations:

A medium - mass star first becomes a red giant. After shedding its outer layers, it leaves behind a white dwarf. Over a very long time, the white dwarf cools down to become a black dwarf. A black hole and neutron star are formed from much more massive stars.

Answer:

C. a black dwarf