**Core Concept**
Kidney transplantation is a surgical procedure that involves transferring a healthy kidney from a donor into a recipient's body to replace a non-functioning kidney. This process involves immunosuppressive therapy to prevent rejection of the transplanted kidney.

**Why the Correct Answer is Right**
Kidney transplantation is a form of organ replacement therapy, which is a treatment option for patients with end-stage renal disease (ESRD). The transplanted kidney produces urine and removes waste products from the blood, just like a normal kidney. The recipient's immune system is suppressed using immunosuppressive medications to prevent the immune cells from attacking the transplanted kidney.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because kidney transplantation is not a form of dialysis, which is a treatment that uses a machine to filter waste products from the blood.

**Option B:** This option is incorrect because kidney transplantation is not a form of conservative management, which involves managing the symptoms of kidney disease without any medical intervention.

**Option C:** This option is incorrect because kidney transplantation is not a form of medical therapy, which involves using medication to treat kidney disease.

**Clinical Pearl / High-Yield Fact**
One of the main advantages of kidney transplantation is that it can improve the quality of life and increase the life expectancy of patients with ESRD. However, it requires lifelong immunosuppressive therapy to prevent rejection of the transplanted kidney.

**Correct Answer:** C.