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.
The correct answer is A) A connection with the audience.
Since trying to have a successful argument, you will want family and friends to support you and that element is called a connection with the audience.
Hope this helps!
A strong conclusion will restate the thesis statement and broaden the scope of the essay in four to six sentences. You should also have an effective last sentence in the essay so you can wrap it up on a high note.