Multiple Choice
The conversion of hydrogen into helium began about 2 minutes after the beginning of the expansion of the universe.Why was there no helium in the universe during the first 2 minutes?
A) There was no matter in the universe during the first 2 minutes
B) Collisions were too violent for helium to be stable during that time
C) No collisions occurred during the first two minutes
D) Neutrino disruption dominated during the first two minutes
Correct Answer:

Verified
Correct Answer:
Verified
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