"Three contrasting hypotheses explain the effectiveness of one-to-one tutoring: a tutor-centered approach, a student-centered approach, and an interactive approach. Generate visual representations for each hypothesis. For the tutor-centered approach, depict a scenario where a tutor is leading and guiding the learning process. For the student-centered approach, illustrate a scenario where the student is actively engaged and taking control of their learning. For the interactive approach, create an image that showcases a dynamic interaction between the tutor and the student, emphasizing collaboration and shared learning."