13. Which of the following conditions would result in negative nitrogen balance? (A) recovery from injury (B) weight training (C) pregnancy (D) Cushing's disease

14. Edema in the lower extremities may appear when there is a severe lack of dietary protein because (A) sodium is retained in the body. (B) blood protein levels drop and fluid shifts into interstitial spaces. (C) blood protein levels increase and force fluid into the cells. (D) the kidneys cannot excrete the extra fluid.