An author should effectively address opposing claims in writing with a counterargument. This approach involves acknowledging the opposing viewpoint and then providing evidence and reasoning that undermine or refute that viewpoint, thereby reinforcing the author's own claim.
While incorporating more facts can support the argument, simply relying on facts alone may not effectively address opposing claims. Defensive claims might come off as overly reactive rather than persuasive. Lastly, relying on opinions can weaken the argument since they are subjective and may not provide solid support against opposing claims. A well-structured counterargument demonstrates a comprehensive understanding of the topic and enhances the overall persuasiveness of the argument.