an authors main opinion in an argumentative text is the\n○ appeal.\n○ claim.\n○ concession.\n○…

Brief Explanations:

In an argumentative text, the author's main opinion is the claim. An appeal is a persuasive technique, a concession acknowledges an opposing - view point, and a counter - argument opposes another argument. The claim is the central stance the author takes.

Answer:

B. claim