The term that would best fit as the opposition of an argument would be a "counterclaim." By definition, a counterclaim is a term used to describe a claim wherein it serves as a "rebut" from the person that is the subject of the accusation. It is of course defined in the constitution, that the accused has the right to defend himself/herself thus making a counterclaim.
Your answer is...
character vs. self.
≈≈≈≈ Glad I Could Help, And Good Luck! ≈≈≈≈
My Brainly Name: AnonymousGiantsFan
C. A creature that has both human and robotic parts