You are correct. The answer is C. If you have a strong argument with facts to back up your speech, you will go a long way. Lack of emotion will definitely not help. You need to express what your idea is, in a way the audience understands. An angry tone will not convince them. You need to be serious, but not angry. Humor will not help because you need to get your point across. Jokes and laughing will not help. Your answer is C.
This probably isn’t right
If you are hungry eat a piece of fruit.
This is because if you are hungry you need to eat. Hungry and eat are very similar.
(Please don’t use my answer use someone else’s because they are probably better than me)