D) They must cause pathological changes in the body
Answer:
A) They must occur
Explanation:
Bulimia disorder is a type of eating disorder in which an individual engages in bingeing, which involves eating a large amount of food without being able to control ones appetite. The individual often becomes worried and preoccupied with his or her body weight, and therefore engages in compensatory behaviors that are unhealthy in order to lose weight and also to relieve the guilt they feel. Compensatory behavior of someone suffering from this disorder is not just restricted to use of laxative to induce vomiting. These also include fasting, excessive exercise, misuse of weight-loss supplements or diuretics etc.
