What is your purpose when you write an argument?

Question

to convince my audience that my idea is true or better than other ideas
to state my evidence and expect people to listen to me
to state my evidence and expect people to listen to me

to find different sources that support my argument
to find different sources that support my argument

to make an educated guess about what I think my research will prove

Answer 1

to make an educated guess about what I think my research will prove