What effect does the use of the logical fallacy in this paragraph have on the credibility of the author’s argument?
Answer choices for the above question

A. It strengthens the argument because it shows that the author carefully researched the results.

B. It strengthens the argument because it shows that the author has narrowed the potential conclusions.

C. It weakens the argument because it shows that the author may have failed to consider all outcomes.

D. It weakens the argument because it shows that the author has based the argument on an incorrect idea.