Final answer:
Ms. Dorsey teaches story grammar to provide a framework that aids students in understanding and remembering the information in stories.
Step-by-step explanation:
Ms. Dorsey's rationale for instructing students in recognizing story grammar in fictional texts is best explained by option A. This approach provides a framework that helps students to comprehend and retain story information. Understanding the structure of a story enables students to organize their thoughts, recall details, and grasp the complexities of narrative elements such as plot, characters, and setting. By identifying the story grammar-which includes the setting, characters, a problem or goal, attempts to solve the problem, and resolution-students achieve a deeper understanding of textual content and a consistent method for engaging with a wide variety of stories.