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 developing computational thinking, which is a general topic. This follows the rule of Topic Sentence. It does not refer to any previous information, so it stands alone. Why other lines are not chosen? The other paragraphs are not chosen because they do not meet the criteria for being independent. For example: - Paragraph 2 starts with "Nevertheless," which is a conjunction. - Paragraph 3 starts with "So," which is also a conjunction. - Paragraph 4 does not introduce a new topic and is more specific. - Paragraph 5 starts with "Nevertheless," which is a conjunction.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it wraps up the discussion. It gives a final opinion about coding being important. This follows the Conclusive Words rule.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects with Paragraph 1 because it gives an example of understanding. The sentence shows how people can use skills without knowing all the details. This follows the Broader to Specific Strategy.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects with Paragraph 2 because it asks a question about learning. It follows the Logical Order as it moves from an example to a question about skills.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects with Paragraph 3 because it answers the question about coding. It gives an opinion from experts, which follows the Topic Example Strategy.
• Pair 4 (Paragraph 4 → Paragraph 5): Paragraph 5 connects with Paragraph 4 because it shows a contrast. It uses the word "Nevertheless" to show that even with the concerns, governments still think coding is important. This follows the Contrast Strategy.