According to aristotle, a tragedy must
resolve conflicts through chance
cause the audience to feel joy and compassion
revolve around the triumph of a tragic hero or heroine
center on the suffering of a tragic hero or heroine

Correct

According to Aristotle, a tragedy must center on the suffering of a tragic hero or heroine.

In his work on Poetics, Aristotle defines tragedy in this way: "Tragedy is a form of  drama exciting the emotions of pity and fear. Its action should be single and complete, presenting a reversal  of fortune, involving persons renowned and of superior attainments, and it should be written in poetry  embellished with every kind of artistic expression."

In his thoughts on Poetics (or what we would call the dramatic arts), Aristotle also asserted that every tragedy (a dramatic, serious play) contains six elements: "Plot, Character, Diction, Thought, Spectacle, Song."

in this passage from chapter 6 of "animal farm", by george orwell, what the author is ridiculing in this passage is the frivolity of some rules.

clover, the mare, believes she remembers that the fourth commandment forbade sleeping in beds because it was something that humans did. snowball, napoleon, and the pigs are brain-workers who look after the welfare of the farm. they are the obvious leaders because they are smart, and so they are entitled to eat the best food and sleep in beds. it is squealer, who says these lines making the difference between sleeping with sheets, what humans do, and sleeping in beds, what pigs do. the unwillingness to question authority makes the oppressed to obey without thinking.