Which best describes an action appropriate to the publishing stage of writing a letter to the editor? identifying evidence that will persuade the intended audience double-checking all facts, numbers, and names used in the letter mailing the letter or submitting it as directed by the instructions on the publication’s website strengthening the argument by adding multiple kinds of support

Refute it, showing why it is mistaken—an apparent but not real problem; acknowledge its validity or plausibility, but suggest why on balance it's relatively less important or less likely than what you propose, and thus doesn't overturn it; concede its force and complicate your idea accordingly—restate your thesis in a more exact, qualified, or nuanced way that takes account of the objection, or start a new section in which you consider your topic in light of it. this will work if the counterargument concerns only an aspect of your argument; if it undermines your whole case, you need a new thesis.