What did scientists use to come up with a theory about how the universe was created? a) observation and opinion b) scientific evidence and observation c) scientific experimentation and opinion d) scientific evidence and experimentation
this is a science question

I believe that the correct answer is indeed B.) Scientific evidence and observation. 

My reason being is because in order to know something you have to have evidence ( old dust & light years ) and you also have to have observation , for me in this case it is watching other stars age and blow up , that's how they said the universe was made , something blew up = the BIG BANG THEORY.

I really hope that this helps you a lot.

Answer steam fog;