I think first sentence and last two. The first one is appealing to a pet owner's feelings of wanting to be a good pet owner and the merchant is using that to persuade them to buy the biscuits. The last two sentences are appealing to a person's feelings of loneliness or being left out and using that to convince you to buy a pool. They both appeal to people's emotions in order to persuade them towards action, that's what it means to use pathos.
It seems as though the answer is C.
The definition of humanities is the human race; having to do with human beings.
Neat roommate. The indirect object is the person or object receiving something.
Are there any anmswer choices?