When developing your argument, you should consider the opinions of your audience to understand what information will best persuade your audience.
Considering the opinion of your audience will strengthen your persuasion. You will show that you may accept that there are other opinions but you can explain why those opinions are not correct, so that you will explain clearly your poin of view in your attempt to persuade your audience to agree with you. You have to appeal to everyone by trying to involve the opinions of the audience.