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.
Answer:
What is the purpose of a blimp?
These properties make blimps ideal for such uses as covering sporting events, advertising and some research, like scouting for whales. Recently, there has been renewed interest in using rigid airships for lifting and/or transporting heavy cargo loads, like ships, tanks and oil rigs, for military and civilian purposes.
Explanation:
The purpose of the swivel that the blimp is attached to is to let the blimp stay clear of the heavy winds by being a joint that can move freely. Why does a blimp need to be moored to the ground? The blimp needs to be moored to the ground so the blimp can't float away.
