Answer:
c. flashback that's the answer
I would say your answer is creating tension. the rest dont seem to work since refuting a counterclaim will make the argument weaker, but it will help the story, not bring it down. it obviously doesnt make the argument stonger, and the main purpose is for the audience to see both sides. so my answer would be creating tension. hope this helps
They are known as stage directions for plays and other theater arts
As you know earth rotates and so does the sun and moon, and occasionaly the moon will cover sun when its souposed to be day but this would only happen very rarely because it takes planets a very long time to overlap when rotating the orbit.