The correct answer is C. uses evidence to prove one idea is better than another.
If you want to make an effective argument and persuade the readers/listeners into believing you, you will need to present them with concrete evidence. If you just use you emotions (such as anger, or sadness) or opinions, you are probably not going to make them trust you. It may happen that your emotions are misplaced or that other people don't share them, or that your opinions don't resonate with your audience. This is why relying on evidence is the way to go.
