Think about yourself as a child, asking your parents for permission to do something that they would normally say no to. You were far more likely to get them to say yes if you anticipated and addressed all of their concerns before they expressed them. You did not want to belittle those concerns, or make them feel dumb, because this only put them on the defensive, and lead to a conclusion that went against your wishes.
The same is true in your writing.
Don’t be afraid to tell others exactly how you think things should go because that’s what we expect from an argument paper. You’re in charge now, what do YOU think?
…provide facts, evidence, and statistics to support your position
While some teachers consider and argument papers to be basically the same thing, it’s usually safe to assume that an argument paper presents a stronger claim—possibly to a more resistant audience.