A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic of writing and evidence. It sets the stage for the discussion about using sources. It does not refer to any previous information. Why other lines are not chosen? The other paragraphs are not chosen because they do not stand alone. For example, "Sometimes you can explain..." starts with a specific situation and needs context. "But sometimes, you need to use..." starts with a conjunction. "This is where you need..." refers back to a previous idea. "Direct quotes are important..." assumes knowledge of quotes.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it summarizes the importance of direct quotes. It wraps up the discussion about using evidence in writing.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects to Paragraph 1 because it gives an example of how to provide evidence. It shows a way to explain ideas, which follows the need for evidence.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects to Paragraph 2 with the word 'But'. This shows a contrast between explaining in your own words and using exact words from a source.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects to Paragraph 3 because it explains the need for a direct quote. It follows logically as it gives a reason for using exact words.
• Pair 4 (Paragraph 4 → Paragraph 5): Paragraph 5 connects to Paragraph 4 because it explains why direct quotes are needed. It gives importance to the idea introduced in the previous paragraph.