A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main idea of the text. It shows the initial feeling about the weekend getaway. It does not refer to any previous information. This follows the rule of Topic Sentence. Why other lines are not chosen? The other paragraphs are not chosen because they do not stand alone. For example, Paragraph 2 starts with "The excitement," which refers back to the idea in Paragraph 1. Paragraph 3 starts with "After selecting the city," which needs context from a previous sentence. Paragraph 4 starts with "However," which shows a contrast and needs earlier information.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it wraps up the ideas. It shows the result of the planning and how it made the trip better. This follows the Conclusive Words rule.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects with Paragraph 1 because it shows a change in feeling. The first paragraph talks about feeling daunted, and the second talks about excitement. This follows the Logical Order rule.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects with Paragraph 2 because it shows the next step after feeling excited. After the excitement, the person selects a city and makes a plan. This follows the Chronological Order rule.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects with Paragraph 3 because it explains the result of having a plan. The third paragraph talks about making a plan, and the fourth talks about how that plan helped. This follows the Cause and Effect Relationship rule.