Which logical fallacy is most clearly used in the following sentence?

parker elementary school’s attempts to create an environmentally sound policy for the school failed because the new principal, mr. lerner, was a greedy, selfish individual.

a. ethical appeal

b. ad hominem

c. hasty generalization

d. either/or

Choose the sentence that is not logically connected in the paragraph. (1) it all happened late one night after the family had gone to bed. (2) jack was lying in bed when he remembered he had left the groceries on the back seat of the car. in the paper bag was a carton of ice cream. (3) the ice cream would melt during the warm summer night. (4) he put it in the refrigerator.