A.I. Explanation:

First sentence: Why this is the first line? This paragraph is the first sentence because it introduces the main topic of growing herbs. It is a general statement about choosing herbs, which is the first step in the process. It does not refer to any previous information. Why other lines are not chosen? Paragraph 2 starts with 'Begin', which is a command and not independent. Paragraph 3 starts with 'After planting', which needs context from previous sentences. Paragraph 4 starts with 'Regular watering', which also needs context. All these sentences do not stand alone.

Concluding sentence: Why this is the last line? This paragraph is the last sentence because it summarizes the care needed for the herbs. It wraps up the main points about growing herbs and shows the importance of watering.

Paragraph pairs:

• Pair 1 (Paragraph 1 → Paragraph 2): Paragraph 2 logically connects with Paragraph 1 because it continues the process of growing herbs. The first paragraph talks about choosing herbs, and the second paragraph explains where to place them. This shows a logical order of steps.
• Pair 2 (Paragraph 2 → Paragraph 3): Paragraph 3 connects with Paragraph 2 because it follows the action of placing the pots after selecting the right spot. This shows a clear sequence of actions in the process of growing herbs.
• Pair 3 (Paragraph 3 → Paragraph 4): Paragraph 4 connects with Paragraph 3 because it talks about what to do after planting. It explains the need for regular watering, which is important for the herbs to grow well.