**Core Concept**
Binge eating disorder and bulimia nervosa are both eating disorders characterized by abnormal eating patterns, but they have distinct differences in their clinical presentation and diagnostic criteria.

**Why the Correct Answer is Right**
The key difference between binge eating disorder and bulimia nervosa lies in the presence of compensatory behaviors, such as self-induced vomiting, laxatives, or excessive exercise, which are typically absent in binge eating disorder. Individuals with bulimia nervosa engage in these behaviors to counteract the caloric intake after binge eating, whereas those with binge eating disorder do not exhibit these compensatory behaviors. This distinction is crucial for accurate diagnosis and treatment planning.

**Why Each Wrong Option is Incorrect**
**Option A:** is incorrect because while binge eating disorder and bulimia nervosa both involve episodes of excessive food consumption, the presence of compensatory behaviors is not the primary differentiator.
**Option B:** is incorrect because frequency and duration of binge eating episodes do not distinguish between the two disorders.
**Option C:** is incorrect because the absence of purging behaviors in binge eating disorder is a key diagnostic criterion, but it does not capture the full scope of differences between the two disorders.

**Clinical Pearl / High-Yield Fact**
It's essential to note that binge eating disorder is often associated with obesity and other comorbidities, such as depression and anxiety, which should be addressed in treatment planning.

**Correct Answer: C. The presence of compensatory behaviors, such as self-induced vomiting or excessive exercise, is typically absent in binge eating disorder.**