A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic of stress. It does not refer to any previous information. It sets the stage for the discussion about stress. 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 bills' which needs context. Paragraph 3 starts with 'But you' which refers back to something not yet mentioned. Paragraph 4 starts with 'Effective stress management' which assumes prior knowledge. Paragraph 5 starts with 'But stress management' which also assumes prior context.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it wraps up the discussion. It gives a final thought about stress management. It shows that everyone needs to find their own way to manage stress.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): This pair connects because the second paragraph gives examples of stress. It shows why stress feels overwhelming. This is a logical order from a general idea to specific examples.
• Pair 2 (Paragraph 2 → Paragraph 3): This pair connects because the third paragraph gives hope. It shows that even with stress, there is control. The word 'But' shows a contrast between feeling overwhelmed and having control.
• Pair 3 (Paragraph 3 → Paragraph 4): This pair connects because the fourth paragraph explains how to take control. It gives a solution to the feeling of being overwhelmed. The first sentence gives hope, and the second gives a way to achieve that hope.
• Pair 4 (Paragraph 4 → Paragraph 5): This pair connects because the fifth paragraph explains that stress management is personal. It shows that what works for one person may not work for another. The word 'But' shows a contrast between general advice and personal choice.