Final answer:
Ava is using the adjustment lifestyle change model to change her eating habits.
Step-by-step explanation:
Ava is using the adjustment lifestyle change model. This model focuses on making small modifications to existing habits in order to achieve a desired change. By reading food labels and avoiding foods with added sugar, she is making a conscious effort to adjust her eating habits. This approach is often more sustainable and easier to adopt than other models.
Learn more about Lifestyle change models