Which of these forms as part of the life cycles of both low-mass and high-mass stars as a result of a star-forming nebula collapsing and spinning?

When a star-forming nebula collapses under gravity, it spins and gathers into a hot, dense protostar. Both low-mass and high-mass stars pass through the protostar stage before developing along different paths. A black hole, white dwarf, or supernova occurs only in later stages and is not shared by both kinds of stars.

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