Question

Which type of star will become a black hole when it dies?

a protostar
a supergiant
a white dwarf
a red dwarf

Answer 1

A supergiant star will become a black hole when it dies. Specifically, massive stars, particularly those that are at least 20 times the mass of the Sun, can undergo a supernova explosion at the end of their life cycle, and if their core remaining after the explosion is sufficiently massive, it can collapse under its own gravity to form a black hole.

So the correct answer is: **a supergiant.**