The correct answer is D. Kidney.
Dialysis is a process that filters waste products and excess fluids from the blood when the kidneys can no longer do this job on their own. It is used to treat people with kidney failure.
There are two types of dialysis: hemodialysis and peritoneal dialysis.
Hemodialysis is the most common type of dialysis. It uses a machine to filter the blood outside the body. The blood is passed through a filter called a dialyzer, which removes waste products and excess fluids. The filtered blood is then returned to the body.
Peritoneal dialysis uses the lining of the abdomen (peritoneum) as a filter. A special solution is placed in the abdomen through a catheter. The waste products and excess fluids from the blood pass into the solution. The solution is then drained out of the abdomen and replaced with fresh solution.
Dialysis is a life-saving treatment for people with kidney failure. It can help to keep people healthy and comfortable.