A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic about children's access to local streets. It gives a broad overview of the importance of this access for their development. It does not use any pronouns or definite articles that refer to previous ideas. Why other lines are not chosen? Paragraph 2 starts with 'Allowing', which is a verb that needs more context. Paragraph 3 starts with 'This depends', which refers back to something not yet mentioned. Paragraph 4 starts with 'Such children', which also refers back to previous information. Paragraph 5 starts with 'Not only', which is a conjunction and needs more context.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it wraps up the main ideas. It shows the importance of children being active and how it helps them. It gives a final thought on the topic.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects to Paragraph 1 because it explains how knowing their neighbourhood helps children. This shows a logical order from the importance of access to the benefits of knowing their area.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects to Paragraph 2 because it explains that knowing the area needs active exploration. This shows a cause and effect relationship where exploration is needed for understanding.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects to Paragraph 3 because it talks about children who see more but do not learn as much. This shows a contrast between seeing and learning.
• Pair 4 (Paragraph 4 → Paragraph 5): Paragraph 5 connects to Paragraph 4 because it explains the importance of children being active. It shows a broader topic of how children need to play and explore by themselves.