Answer:
A. A counterargument is presented so the opposing viewpoint can be refuted
Explanation:
A counterargument can be defined as an opposing viewpoint (perspective) put forward by an author or speaker.
On the other hand, an argument can be defined as an expression of a writer's position (stance) on a subject matter or topic. This ultimately implies that, when writers engage in an argument or write an argumentative essay, they make use of a claim to state or express their opinions about the subject matter or topic.
Hence, the statement which is true of a counterargument, but not true of an argument is that, a counterargument is presented so the opposing viewpoint can be refuted.
This ultimately implies that, a counterargument expresses the opinion of a writer or an author with respect to refuting the claim presented by the opposition. Therefore, a counterargument is used typically to neutralize or prove that an opposing viewpoint (perspective) is not correct (true).
