Final answer:
The author uses a chronological and linear structure to discuss key points, introducing and developing them in a logical progression of events.
Step-by-step explanation:
The author uses a chronological and linear structure to discuss key points in the given lines of the story.
This means that events are presented in the order in which they occur, without interruption or fragmentation.
The author introduces and develops these key points by following a logical progression of events.
Each point is supported by relevant details and examples that help to clarify and strengthen the main idea or theme of the story.