a. nebula
A nebula is a mist of particles, particularly and ionized gases hydrogen and helium. Basically, the word was adopted to represent any distributed gigantic object, comprising galaxies across the Milky Way. Andromeda Nebula was sometimes also known as part of the Andromeda Galaxy which re[present a gigantic mist of hydrogen.
Answer:
Try B. Supernova
Explanation:
A. Nebula was incorrect for me on edge
