Fourteen-year-old Harper has what is politely referred to as a "healthy appetite," yet she maintains a very thin figure with no apparent effort. You notice that Harper often disappears briefly after meals or snacks, but she becomes nervous if others insist on accompanying her to the restroom. Harper may be suffering from: Bulimia Anorexia nervosa Schizophrenia an undiagnosed brain disorder

Based on the information provided, Harper's behavior suggests that she may be suffering from Bulimia. Here’s the reasoning: 1. **Healthy Appetite**: Harper has a "healthy appetite," which indicates that she eats a lot. 2. **Thin Figure**: Despite her appetite, she maintains a very thin figure, which can be a sign of an eating disorder. 3. **Disappearing After Meals**: The fact that she often disappears briefly after meals or snacks raises a red flag. This behavior can indicate that she is engaging in purging behaviors, which is common in Bulimia. 4. **Nervousness About Accompanying Others**: Her nervousness when others insist on accompanying her to the restroom suggests that she may be trying to hide her purging behavior, which is also characteristic of Bulimia. In contrast: - **Anorexia Nervosa** typically involves severe restriction of food intake and an intense fear of gaining weight, which does not align with Harper's "healthy appetite." - **Schizophrenia** is a serious mental disorder that affects how a person thinks, feels, and behaves, and is not directly related to eating behaviors. - **An Undiagnosed Brain Disorder** is too vague and does not specifically relate to the symptoms described. Therefore, the most fitting conclusion is that Harper may be suffering from **Bulimia**.