A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first line because it introduces the main topic of green spaces and their benefits. It does not need another sentence for context. It sets up the main idea without going into details. This follows the rule of Topic Sentence. Why other lines are not chosen? Paragraph 2 starts with "In 2002," which needs context, so it is not independent. Paragraph 3 starts with "Patients," which refers to a specific group and needs prior information. Paragraph 4 starts with "Similarly," which shows a connection to a previous idea, so it cannot be first. Paragraph 5 starts with "Employees," which also needs context.

Concluding sentence: Why this is the last line? This paragraph is the last line because it wraps up the discussion about the benefits of green spaces. It gives a final example of how views can improve job satisfaction. This follows the Conclusive Words rule.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects to Paragraph 1 because it gives a specific example of how green spaces help. This follows the Broader to Specific Strategy.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects to Paragraph 2 because it gives a specific case of patients in hospitals. This follows the Logical Order rule.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects to Paragraph 3 because it shows another group of people who benefit from green spaces. This follows the Cause and Effect Relationship rule.
• Pair 4 (Paragraph 4 → Paragraph 5): Paragraph 5 connects to Paragraph 4 because it continues the idea of how views affect people. This follows the Same Theme rule.