Final answer:
Mrs. Greenbaum, who is suffering from kidney disease and edema, would benefit from a sodium-controlled diet to reduce fluid retention and swelling in her body.
Step-by-step explanation:
Mrs. Greenbaum, who is suffering from kidney disease and experiencing edema, would benefit from a sodium-controlled diet. Edema is the accumulation of excess fluid in the tissues, and sodium control is an important aspect of managing edema. A low-sodium diet helps reduce fluid retention and swelling in the body.