Question

after the supernova in a stars life cycle, what else is formed in addition to a nebula? red giant or protostar neutron star or red giant protostar or black hole black hole or neutron star

Explanation:

When a star undergoes a supernova explosion, depending on the mass of the original star, either a neutron star or a black - hole can be formed in addition to a nebula. A red giant is an earlier stage in a star's life cycle, and a protostar is the initial stage of star formation.

Answer:

D. black hole or neutron star