SAT English Practice Question

It is generally acknowledged that a well-structured argument should be supported with clear and relevant evidence. However, it's important to recognize that evidence can also be used to establish a counterargument or to challenge a different perspective. The most compelling arguments often acknowledge opposing views and then address them in a way that strengthens the argument. How would an author most likely use evidence to further the argument?

1. A.support only the author’s main idea.
2. B.only support the author’s claims.
3. C.only explain the author’s perspective.
4. D.support or refute the author’s main idea.