Final answer:
The correct sequence of a high mass star's life cycle is nebula, main sequence star, supergiant, supernova, and then neutron star or black hole.
Step-by-step explanation:
To put the steps in order for a high mass star, we should follow the sequence of events in a star's life from its formation to its end. The correct order for a high mass star is: nebula, main sequence star, supergiant, supernova, and then neutron star or a black hole. This sequence shows the progression from a star's birth in a cloud of dust and gas, through its stable lifetime of fusion as a main sequence star, its expansion into a supergiant, the explosive supernova stage, and finally, its collapse into a neutron star or black hole.
Therefore, the correct order is: C) Nebula, main sequence star, supergiant, supernova, neutron star or a black hole.