In its simplest definition straw man is the name of a logical fallacy which means that if you carefully dissect the argument or statement it doesn't make sense you put forth a straw man because you know it will be easy for you to knock down or discredit It's a way of misrepresenting your opponent's position.
“Straw man” It’s a fallacy, a fallacy is meant to distract and deceive, using a twisted version of the opposite side’s argument against them. Users of this form of propaganda build a “straw man” and attack it in place of their opponent’s actual argument.
The straw man will be a weaker, often a extreme, version of the original argument, similar in appearance but much easier to refute and destroy.
Explanation:
Fallacies are errors or tricks of reasoning. A fallacy is an error of reasoning if it occurs accidentally; it is a trick of reasoning if a speaker or writer uses it to manipulate his audience.
The antagonist is always the person (or people) who oppose the protagonist, so the antagonist would try to take down or stop the protagonist from achieving his/her goals
The main conflict is that Harry is now old enough to face voldemort for the first time. however harry does not know this so he assumes that this fight will be between him and snake but it will actually be between him and quirrel.
5 is opinion so you can basically say whatever you want