The small density variations that subsequently led to the formation of large-scale structure in the universe are thought to have formed
A) from quantum fluctuations during inflation.
B) due to the supernovae of the very first stars.
C) at the end of the recombination epoch.
D) as particle-antiparticle pairs annihilated.
E) as supermassive black holes powered the first quasars.

Question

Quizplus · Accepted Answer

Quantum fluctuations during the inflationary period of the early universe are believed to have been stretched to macroscopic scales, leading to the small density variations that eventually grew into the large-scale structures we observe in the universe today.

The Small Density Variations That Subsequently Led to the Formation