First sentence: Why this is the first line? This paragraph is the first sentence because it is a general statement. It introduces the main topic of logical arguments. It does not need another sentence for context. It does not start with a conjunction or use pronouns. Why other lines are not chosen? Paragraph 2 starts with 'From', which is a preposition, so it cannot be independent. Paragraph 3 is not chosen because it is not a general statement; it is more specific. Paragraph 4 starts with 'Then', which is a conjunction, so it cannot be independent.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it wraps up the discussion about logical arguments. It shows how the claims are made clear for the audience, which concludes the topic.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects with Paragraph 1 because it gives examples of where logical arguments can be found. This follows the Broader to Specific Strategy.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects with Paragraph 2 because it explains what people do with the arguments mentioned in Paragraph 2. This follows the Logical Order rule.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects with Paragraph 3 because it explains how claims are structured after making them. This follows the Cause and Effect Relationship rule.