The answer is character vs character.
It seems that you have missed to attach the excerpt for us to answer this question, so I had to look for it. Anyway, here is the answer. The excerpt relates to the premises of Brown v. Board of Education in that t<span>he Brown case addresses whether education systems separated by race limit citizens' privileges. Hope this helps.</span>
The correct answer is A. You can receive instant feedback from your audience.
This is something that cannot be done if you are writing a text and your audience reads it at their home - they cannot immediately let you know what they think about your ideas and arguments. However, if you are giving a speech in front of an audience, then they absolutely can. B, C, and D are examples of what happens during writing, rather than speaking.
Answer:
I think it's formal I always write them that way, so I would say formal.