Which statement best describes a counterclaim? a counterclaim is a document or reference that provides information. a counterclaim is an opinion or stated idea that not everyone believes. a counterclaim is an opposing idea or opinion. a counterclaim is an argument against an idea.

I believe the correct answer is - A counterclaim is an opposing idea or opinion.
In an argument, or a debate, the first speaker is going to say what he or she thinks, and then you can present your own rebuttal. This rebuttal is formally known as a counterclaim - if you don't agree with the first speaker's ideas, you can present your own, which are usually opposing. 

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