Final answer:
Sophia Miranda's approach to enforcing school rules exemplifies the Behavioral Expectations variable in the Model for Promoting Student Motivation, supporting a structured and motivated learning environment.
Step-by-step explanation:
The example of Sophia Miranda setting up rules and enforcing them during the first 10 days of school to establish a pattern best illustrates the Behavioral Expectations variable in the Model for Promoting Student Motivation. This approach aligns with the concept that establishing clear expectations and consistent enforcement can lead to the internalization of desired behaviors among students. Through repetition and reinforcement, students learn what is expected of them, which can contribute to a more structured and predictable learning environment, thereby potentially increasing student motivation and engagement.