Question

A supernova is the explosion of a dying?
a. medium-mass star.
b. high-mass star.
c. protostar.
d. low-mass star.

Answer 1

A supernova is the explosion of a dying high-mass star. High-mass stars are born in nebulae and evolve and live in the Main Sequence. But, after the red-giant phase of a star, unlike low-mass stars, a high-mass star undergoes a supernova explosion.