Multiple Choice
According to the Big Bang theory, how many forces-and which ones-operated in the universe during the GUT era?
A) 1 force that represented the unification of all four forces that operate today
B) 2 forces: the strong force and the electroweak force
C) 3 forces: gravity, the strong force, and the electroweak force
D) 2 forces: gravity and a single force that later became the strong, weak, and electromagnetic forces
Correct Answer:

Verified
Correct Answer:
Verified
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