Grand unified theories are very attractive because they can explain
A) why we have five fundamental forces in the universe today.
B) why the Big Bang never made any antimatter.
C) why the universe consists mostly of matter.
D) the accelerating expansion of the universe.
E) what happens inside a black hole.

Question

Quizplus · Accepted Answer

Grand unified theories aim to explain why the universe consists mostly of matter by proposing mechanisms that could have led to a slight imbalance between matter and antimatter in the early universe, resulting in the predominance of matter we observe today.

Grand Unified Theories Are Very Attractive Because They Can Explain