Writing about something with the purpose of proving or disproving, clarifying, reviewing, or judging its merits is writing intended to "inform" since it seeks the truth. Of course "inform" and "persuade" go hand-in-hand quite frequently.
A. Because setting rules can let each person in the group get a chance to speak.
I believe the answer is 2) Keeps the audience interested even if your complex process is not as engaging as it could be hope this helps :)
