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

It would usually be a Blue Giant or Supergiant, and the stars will usually become a supernova 1st. Then the stage where they turn into black holes comes forward, and *poof*= Black Hole!

Hope this helps you!!! (:

The stars with large masses can turn into a black hole.

Explanation:

A black hole is illustrated by the escape velocity, which would have to be acquired in order to get rid of the gravitational pull imparted on an object. The stars containing large masses can only turn into black holes. The giant stars, that is, about 20 times more of the mass of the Sun may finally develop into a black hole. A black hole produced from a star is known as a stellar black hole.