I don't want to be rude or anything but this looks like it would be a math question
He was used to being made fun of.
We know this by him taking this reply in ‘with a sort of humble patience’. This means that he has experienced this kind of teasing - or even bullying before and he is used to it.
A) He wants to undermine Snowball's credibility by mentioning him.
B) He wants to suppress a potential uprising of the animals.
C) He wants to distract the animals from learning the truth.
