First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic of the life cycle of an ant. It gives a broad overview of how an ant starts its life. It does not refer to any previous information. Why other lines are not chosen? Paragraph 2 starts with "Eventually," which is a transitional word. This means it connects to something before it. Paragraph 3 starts with "At this point," which also connects to earlier ideas. Paragraph 4 starts with "As a pupa," which assumes knowledge of what comes before. All these reasons make them not independent.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it concludes the life cycle of an ant. It shows the final stage of development. It wraps up the main topic of how an ant grows.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects to Paragraph 1 because it continues the story of the larva. The larva grows after it hatches from the egg. This shows a logical order of events.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects to Paragraph 2 because it describes what happens next. After the larva grows, it may spin a cocoon. This shows a clear progression in the life cycle.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects to Paragraph 3 because it explains what happens after the cocoon stage. The pupa develops into an adult ant. This shows a logical order of changes.