Yes, Old mayor is the one who says the statement man is the only real enemy we have and Remove Man from the scene, and the root cause of hunger and overwork is abolished forever. The novels reveals about real enemy is that whatever goes upon two legs is an enemy. The answer in this question is yes, it is true that the old mayor say the statement.
Answer:
1)Ethos-using credibility to prove a point of view(ex. if you're a doctor someone is more willing to take health advice from you)
2)Logos-Using logic or facts to prove an argument(ex. A study done in___ says... or statistics say...)
3)Pathos-Using the emotion of your audience to your advantage(ex. the homeless dog/animal commercials that come on and use your emotions of feeling bad to get you to want to adopt)
4) it's important because knowing them will help you orve a point more effectively, this helps you in life with any argument you may have to make including if you ever become president for example to get votes