What is the primary cause of the edema that accompanies kwashiorkor?​
a. ​deterioration of the digestive tract lining.
b. ​synthesis of enzymes is reduced.
c. ​albumin concentrations fall and fluid leaks into interstitial spaces.
d. ​lipoprotein synthesis is diminished, causing fat to accumulate.
e. ​protein is lost from the heart muscle, resulting in a weak heartbeat?