Answer:
It demonstrates that you have thoroughly explored the topic, and that you are aware of alternate points of view. By addressing or refuting the counterclaims logically, you gain credibility for your argument.
Explanation:
They answer cannot be D, because the positioning of actors on the stage isn't one of Aristole's elements of drama.
It cannot be C, because costumes aren't a part of stage directions.
It can't be B, because costumes aren't a part of dialogue.
Therefore, the answer must be (A) staging, because it's the only one that includes them all.