A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main idea of the text. It talks about the time during the school year and gives a broad overview of the situation. This is a general statement that does not need other sentences for context. It does not start with a conjunction or use pronouns. Why other lines are not chosen? Paragraph 2 starts with 'We could' which is a pronoun and does not stand alone. Paragraph 3 starts with 'During the school year' but it is not general enough. Paragraph 4 starts with 'We knew' which is also a pronoun. Paragraph 5 starts with 'The information' which uses a definite article and assumes prior knowledge.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it summarizes the main idea of the text. It shows the final outcome of the changes discussed in the previous paragraphs. It wraps up the discussion about the unpredictability of decisions after internships.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): This pair connects because Paragraph 2 gives examples of how the unaccountability mentioned in Paragraph 1 allows for debates. This shows a logical order where the first paragraph introduces the idea and the second paragraph expands on it.
• Pair 2 (Paragraph 2 → Paragraph 3): This pair connects because Paragraph 3 explains the result of the debates in Paragraph 2. It shows how being insulated from consequences helps in solving problems. This is a cause and effect relationship.
• Pair 3 (Paragraph 3 → Paragraph 4): This pair connects because Paragraph 4 shows a change from the situation in Paragraph 3. It indicates that the ease of solving problems will end when internships start. This shows a logical order of change.
• Pair 4 (Paragraph 4 → Paragraph 5): This pair connects because Paragraph 5 explains why the situation will change. It gives details about the unpredictability of information and outcomes after starting internships. This shows a broader to specific strategy.