Abnormal Body Image in Anorexia

The beleif in anorexia nervosa about body image is an example of ? 

1. Delusion


2. Over valued idea


3. Obsession

Answer: Delusion requires a beleif to be culturally unacceptable and illogical, in addition to being false or being held on inadequate grounds. Obsessions are intrusive thoughts considered to be false by the patient. The answer is overvalued idea.