A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first line because it introduces the main topic about personal behaviour in the workplace. It gives a broad overview of how behaviour affects relationships and productivity. 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 'As a Department of Education employee,' which needs context. Paragraph 3 starts with 'It is your responsibility,' which is not general. Paragraph 4 also starts with 'It is your responsibility,' which does not introduce a new idea.

Concluding sentence: Why this is the last line? This paragraph is the last line because it wraps up the ideas about responsibilities. It gives a final thought on how to behave in the workplace. This follows the Summary Style rule.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects with Paragraph 1 because it continues the topic of behaviour. It shows how personal behaviour relates to the values of the organisation. This follows the Logical Order rule.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects with Paragraph 2 because it talks about responsibilities. It shows what is expected from employees. This follows the Broader to Specific Strategy.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects with Paragraph 3 because it adds more responsibilities. It explains how to be responsive by being courteous and respectful. This follows the Logical Order rule.