Question

identify the type of star that goes through these steps in their life cycles. formation of a protostar: formation of a black hole: formation of a white dwarf: formation of a red giant star: formation of a main sequence star:

Explanation:

Stars with different masses have different life - cycle stages. A protostar is the initial stage for all stars. High - mass stars (much more massive than the Sun) can form black holes at the end of their life cycles. Low - to medium - mass stars (like the Sun) form white dwarfs. Red giant stars are formed when stars run out of hydrogen in their cores and expand. All stars, regardless of mass, spend a significant part of their lives as main - sequence stars.

Answer:

Formation of a protostar: All stars
Formation of a black hole: High - mass stars
Formation of a white dwarf: Low - to medium - mass stars
Formation of a red giant star: All stars (at a certain stage)
Formation of a main sequence star: All stars