Ascientist would build a model to observe what? how cars are built how the planets revolve around the sun how high a dog can jump how water boils and turns to steam

How the planets revolve around the sun. This is the most known observation scientist would want to discover with a model and also the only accurate choice to make a model for. So answer B

Hope my answer is correct. Also hope this helps :)

i believe it is b. what was the cause of the big bang

hope this !

as technology advances, new experiments often expose problems in accepted theories. c

hope i

-lavira: )