Reionization of the Neutral Gas in the Universe Occurred Due

question 4

Multiple Choice

Reionization of the neutral gas in the universe occurred due to the

• A) decay of dark matter particles.
• B) emission of neutrinos by the first stars that formed.
• C) heating from the motion of high-velocity black holes.
• D) radiation from the first stars, supernovae, and black holes that formed.
• E) positron and electron annihilations.

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