Which of the following is an appeal to reason? a. statistics or other facts that will bring audiences to a logical conclusion b. positive references to the audience's sense of right versus wrong c. strong organization and use of proper spelling, punctuation, and grammar d. descriptions of events or places that have meanings to the audience

The correct answer here is the first option.

All of these are used in order to present and appeal to audience but only the first option appeals to reason. Using facts and statistics is a good way to logically show and argument your point. This way you will be using the reason to appeal to your audience and that is why the first option is correct.