<h3>An example of a rhetorical situation that I have found myself in was at school one day when I was presenting a project. The exigence was trying to get the point of the project across where the students could understand it. The audience would be the students.</h3>
The tone which is not effective for convincing people that they should subscribe to your perspective is definitely C) sarcastic. Nobody is going to listen to you if you offend or mock them.