A client referred to the eating disorders clinic has been diagnosed as having anorexia nervosa. ...

A client referred to the eating disorders clinic has been diagnosed as having anorexia nervosa.
  History reveals she virtually stopped eating 5 months ago and has lost 25 of her body weight. Lab
  tests reveal hypokalemia.
 
  On the basis of what is currently known about the client, the nursing
  diagnosis that can be established is
  a. adult failure to thrive related to abuse of laxatives, as evidenced by electrolyte
  imbalances.
  b. disturbed energy field related to physical exertion in excess of energy produced
  through caloric intake, as evidenced by weight loss.
  c. ineffective health maintenance related to self-induced vomiting, as evidenced by
  swollen parotid glands.
  d. imbalanced nutrition: less than body requirements related to refusal to eat, as
  evidenced by loss of 25 of body weight.