Answer:
A) anorexia nervosa.
Explanation:
Anorexia nervosa or popularly known as anorexia is an eating disorder that causes low weight, emaciation, food restriction, fear of been obese or gaining weight and a desire to be thin as much as possible. Most people suffering from this condition see themselves as obese and over weight meanwhile they are very thing and under weight.
Their body weight is usually abnormal as a result of lack of proper feeding. This is to the small amount of food they eat and the restrictions to certain foods which leads to starvation most of the time.
People suffering from anorexia nervosa usually exercise and push themselves to the extreme, force themselves to vomit and sometimes take laxatives to help them loose weight.