A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic of network building. It gives a broad overview of what network building is about. It does not use any specific details or references to previous ideas. Why other lines are not chosen? Paragraph 2 starts with 'To build your network,' which is a specific action and not a general statement. Paragraph 3 starts with 'Once this is planned out,' which assumes prior context. Paragraph 4 starts with 'As your network progresses,' which also assumes prior knowledge. All these sentences do not stand alone without needing more context.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it wraps up the ideas about network building. It uses conclusive words like 'ensure' to show that it is about maintaining the network. It reflects the overall theme of supporting and managing the network.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 logically connects with Paragraph 1 because it continues the topic of network building. It uses the Logical Order rule, as it explains the first step in the process of building a network.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects with Paragraph 2 because it gives more details about the mission statement. It follows the Broader to Specific Strategy, as it takes the general idea of summarizing the mission and provides specific actions to take.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects with Paragraph 3 because it shows the next step after planning the targets. It uses the Logical Order rule, as it explains what to do after you have your roadmap.
• Pair 4 (Paragraph 4 → Paragraph 5): Paragraph 5 connects with Paragraph 4 because it talks about what to do as the network grows. It follows the Chronological Order rule, as it describes actions to take after inviting new members.