Stacy often eats to excess,consuming very large quantities of food in one sitting.After she binges,Stacy will then go to the gym for hours at time.Stacy's behavioral pattern is MOST consistent with

A) anorexia nervosa.
B) bulimia nervosa.
C) binge eating disorder.
D) yo-yo dieting.

Stacy's behavior is consistent with bulimia nervosa, which involves recurrent episodes of binge eating followed by compensatory behaviors such as excessive exercise or purging. Anorexia nervosa is characterized by restriction of food intake, while binge eating disorder is characterized by recurrent episodes of binge eating without compensatory behaviors. Yo-yo dieting involves repeated cycles of weight loss followed by weight gain, which is not reflective of Stacy's behavior.