Final answer:
A story that unfolds its events in chronological order is using a progressive plot. This type of plot follows events as they happen in time, without the use of flashbacks or non-linear storytelling techniques. The correct option is 4.
Step-by-step explanation:
A story that relates its events in the order in which they occur is using a progressive plot. In contrast to a nonlinear narrative, which may jump back and forth in time through devices like flashbacks and is often used to showcase trauma or vignettes, a progressive plot maintains a chronological flow.
This means that the story unfolds in a linear fashion, following the cause-and-effect chain of events without deviations from this temporal order. It's much like a timeline that reflects reality and adheres to the natural sequence of happenings, providing clarity and an ease of following the plot for the reader. The correct option is 4.