Answer:
The development of plot helps the readers to unlock the meaning of the story as the plot begins to proceed from the introduction to the conclusion.
Step-by-step explanation:
The plot, in literary terms, can be defined as a series or chain of events that helps to form a story. There are five elements of plot exposition or introduction, rising event, climax, falling action, resolution (a.k.a denoument or conclusion).
As the readers understand this development or putting together of a plot, will help them to unlock the meaning or message of the author. As the plot begins to unfold one-by-one, the author begins to develop the theme or the message he or she wants to convey and when the readers reach the conclusive part of the plot, the message in its totality is revealed leaving lasting impressions on the readers mind.