A persuasive speech on a school rule, or a thing you want, or for school to allow phones during lunch or something like that.
Answer:
I think that the reason for Rainsford's change is because in the beginning is that he showed no care for the animals that he hunts. And now he shows remorse.
"Today nobody brought his or her instrument" is correct. It is common for people to use "their" in a sentence like this, but "his or her" is the more proper term.
B. Nothing good lasts forever.