Answer:
um please give more details about what we have to do in the question that's would be helpful.
#1) Which illness is characterized by obsessive overeating and recurrent, inappropriate behavior in order to prevent weight gain?
Answer: Bulimia. People with bulimia are caught in a cycle of eating large quantities of food called "bingeing", and then vomiting, taking laxatives or diuretics called "purging", in order to prevent gaining weight.