A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic of oil palm trees. It gives a broad overview of where these trees come from and where most of the production is now. It does not use any words that need prior context. Why other lines are not chosen? Paragraph 2 starts with "The oil is extracted..." which uses "the" and assumes prior knowledge. Paragraph 3 starts with "With the global increase..." which is not a general statement. Paragraph 4 starts with "As a result..." which is a conjunction and needs prior context.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it wraps up the discussion by showing the result of the demand for oil fruit. It summarizes the main points and gives a clear conclusion.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): This pair connects because the second paragraph explains what is produced from the oil palm trees mentioned in the first paragraph. This follows the Broader to Specific Strategy.
• Pair 2 (Paragraph 2 → Paragraph 3): This pair connects because the second paragraph talks about the oil extracted from the fruit, and the third paragraph explains the increase in demand for this oil. This shows a Logical Order of ideas.
• Pair 3 (Paragraph 3 → Paragraph 4): This pair connects because the fourth paragraph explains the effect of the demand mentioned in the third paragraph. This shows a Cause and Effect Relationship.