Hi lovely,
The answer you're looking for would be Brainstorming.
I'm pretty sure it's the last one; Everyone was having a wonderful time at the party, because the present tense helps it feel more active.
They should both restate the claim. Your conclusion could have a Call To Action which tells the reader that you are giving a reference to him/her.
Answer:
I would have to say C. or B.
Explanation:
I hoped this help at least.
