A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first line because it introduces the main topic of growing food and starting a vegetable garden. It gives a broad overview of what the text will be about. It does not refer to any previous information, so it stands alone. Why other lines are not chosen? Paragraph 2 starts with "After choosing" which means it needs more context. Paragraph 3 starts with "Once the soil is ready" which also needs prior information. Paragraph 4 starts with "To keep your plants healthy" which assumes knowledge of previous steps.

Concluding sentence: Why this is the last line? This paragraph is the last line because it gives important information about caring for the plants. It wraps up the topic by showing what is needed to keep the plants healthy.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 connects to Paragraph 1 because it follows the idea of starting a vegetable garden. It shows the next step after deciding to grow food. This is a logical order.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 follows Paragraph 2 because it talks about what to do after preparing the soil. It shows the next step in the process of planting.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects to Paragraph 3 because it explains what to do after planting seeds. It talks about how to care for the plants, which is the next step.