Which excerpt from tinker v. des moines shows how precedent support an argument?

a. "in the absence of a specific showing of constitutionally valid reasons to regulate their speech, students are entitled to freedom of expression of their views. as judge gewin, speaking for the fifth circuit, said, school officials cannot suppress 'expressions of feelings with which they do not wish to contend.'"
b. "cf. hammond [p514] v. south carolina state college, 272 f. supp. 947 (d. c.s. c.1967) (orderly protest meeting on state college campus); dickey v. alabama state board of education, 273 f. supp. 613 (d. c.m. d. ala. 967) (expulsion of student editor of college newspaper)."
c. "while the absence of obscene remarks or boisterous and loud disorder perhaps justifies the court's statement that the few armband students did not actually "disrupt" the classwork, i think the record overwhelmingly shows that the armbands did exactly what the elected school officials and principals foresaw they would."
d. "one does not need to be a prophet or the son of a prophet to know that, after the court's holding today, some students in iowa schools — and, indeed, in all schools — will be ready, able, and willing to defy their teachers on practically all orders.

Which statement best describes the use of satire in this passage? read the passage from chapter 7 of animal farm as clover looked down the hillside her eyes filled with tears. if she could have spoken her thoughts, it would have been to say that this was not what they had aimed at when they had set themselves years ago to work for the overthrow of the human race. these scenes of terror and slaughter were not what they had looked forward to on that night when old major first stirred them to rebellion. if she herself had had any picture of the future, it had been of a society of animals set free from hunger and the whip, all equal, each working according to his capacity, the strong protecting the weak, as she had protected the lost brood of ducklings with her foreleg on the night of major's speech. instead-she did not know why—they had come to a time when no one dared speak his mind, when fierce, growling dogs roamed everywhere, and when you had to watch your comrades torn to pieces after confessing to shocking crimes. there was no thought of rebellion or parody is used to illustrate the impact of stalin's purge. ridicule is used to show the gullibility of the russian citizens. reversal is used to show how clover, representing the people, has changed ideals. personification is used to show the reader stalin's thoughts and feelings