Question

what will a medium - mass star become at the very end of its life cycle?
a red giant
a black hole
a black dwarf
a neutron star

Explanation:

A medium - mass star first becomes a red giant. After further evolution, it sheds its outer layers and the core cools down to become a black dwarf. Black holes and neutron stars are formed from much more massive stars.

Answer:

C. a black dwarf