A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first line because it introduces the main topic. It talks about the Norwegian Government and its actions to control the oil industry. This is an overview of the subject. It does not use any words that need prior context. Why other lines are not chosen? Paragraph 2 starts with "But" which is a conjunction, so it cannot be independent. Paragraph 3 starts with "Ever since" which suggests a time context, so it cannot stand alone. Paragraph 4 uses a quote and does not introduce a new idea, so it is not independent.

Concluding sentence: Why this is the last line? This paragraph is the last line because it summarizes the changes and successes of the Government's programme. It gives a clear end to the discussion about the oil industry and development.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects to Paragraph 1 because it uses the word "But". This shows a contrast to the previous idea. The first paragraph talks about control, and the second talks about how the oil industry can overcome this control.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects to Paragraph 2 because it gives a quote that supports the idea of change. The quote shows that people believe change is coming, which relates to the doubts in Paragraph 2.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects to Paragraph 3 because it explains what changes are happening. The quote in Paragraph 3 talks about change, and Paragraph 4 gives details about the development in the north.