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Bot GPT 4-o mini The correct sequence in the life cycle of a massive star is:
**nebula, protostar, star, super red giant, supernova, black hole (or neutron star)**
Therefore, the closest option to this sequence is:
**nebula, protostar, star, super red giant, supernova, neutron star.**
However, it's important to note that after a supernova, a massive star can become either a neutron star or a black hole, depending on its mass.