A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic of the event, which is selecting a movie. It is a general statement that does not need another sentence for context. It does not start with a conjunction or use pronouns that refer to other ideas. Why other lines are not chosen? Paragraph 2 starts with "Deciding" which makes it dependent on prior context. Paragraph 3 starts with "After" which shows it needs a previous idea. Paragraph 4 starts with "Finally" which indicates it is not independent as it refers to earlier actions.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it wraps up the planning process. It uses the word "Finally" which signals that this is the conclusion of the steps needed for the event.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects to Paragraph 1 because it continues the process of planning the event. The first step is about the movie, and the next step is about the location. This shows a logical order of planning.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 follows Paragraph 2 because it talks about what to do after deciding the location. The word "After" shows the order of actions, making it clear that inviting friends comes next.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects to Paragraph 3 because it describes what to do after inviting friends. The word "Finally" shows that this is the last step in the process, which is setting up for the event.