A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic of focus and distractions. It does not need another sentence for context. It is a general statement about what experts say. Why other lines are not chosen? Paragraph 2 starts with "This is good advice" which refers back to the previous idea, so it is not independent. Paragraph 3 starts with "But there is a problem" which also refers back to earlier ideas. Paragraph 4 starts with "Of the many options" which is not a general statement and needs context.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it asks a question that wraps up the discussion. It does not introduce new ideas but reflects on the earlier points about focus and advice.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects to Paragraph 1 because it gives a positive view of the advice from experts. It uses the Connector strategy by saying "This is good advice" which shows agreement with the previous statement.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects to Paragraph 2 because it introduces a contrast. The word "But" shows that there is a different view about the advice given in the previous paragraph. This is a Contrast strategy.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects to Paragraph 3 because it asks a question about the problem mentioned. This shows a logical order where the question follows the statement about the problem.