Answer: By offering a concession, the author appears reasonable, open-minded, and thoughtful.
Step-by-step explanation:
Concession refers to the act of accepting that a particular thing is true, or when one accept defeat in an argument.
The benefit of responding to a counterargument with a concession is that by offering a concession, the author appears reasonable, open-minded, and thoughtful.
When one offers s concession, it shows that the person agrees to the opinion of someone else and sees it as being valid. This shows that such person is reasonable and thoughtful.