Loss of weight takes place due to:

Explanation

Option C is correct as both anorexia nervosa and bulimia nervosa are eating disorders that lead to a decline in body weight. Anorexia nervosa is an eating disorder characterized by a refusal to maintain a healthy body weight, an intense fear of gaining weight, and a distorted body image. People with anorexia nervosa often restrict their food intake, engage in excessive exercise, or purge after eating resulting in decline of body weight. Bulimia nervosa is an eating disorder that causes you to eat large amounts of food at one time (binge) and then get rid of it (purge). Sufficient nutrition is not provided to the body which causes a decline in the body weight.