Which statement indicates that a client with chronic kidney disease understands the purpose of using continuous ambulatory peritoneal dialysis (CAPD)?

The statement about CAPD using the peritoneum as a semipermeable membrane to clear toxins by osmosis and diffusion accurately reflects a core understanding of how continuous ambulatory peritoneal dialysis works. CAPD involves the infusion of a dialysis solution into the abdominal cavity, where the peritoneum acts as a natural filter, allowing waste products and excess fluids to be drawn from the blood into the dialysis solution. This process relies on the principles of osmosis and diffusion to effectively remove toxins and maintain fluid and electrolyte balance for patients with chronic kidney disease.

This highlights the function and mechanism of action of CAPD, which is essential for clients to understand as they engage in their treatment. The other statements do not accurately convey the purpose or functioning of CAPD or misrepresent the nature of the treatment, pointing towards misunderstandings about its administration and goals.