Which argument could be an example of a hasty generalization?

a. You should never take what you haven't earned, so you can't eat food your parents made for you.
b. 70% of students polled do not approve of the principal, so we need a new principal.
c. Stuben knows that Silvana is meant to be his girlfriend because forming a lasting relationship is important to one's health.
d. If you turn in my homework, I'll pass the class. I passed the class, so that means you turned in my homework.