**Core Concept**
Amphotericin B is a polyene antifungal medication used to treat serious fungal infections. The dose-limiting toxicity of amphotericin B is a critical aspect of its pharmacology, as it determines the maximum safe dose that can be administered to patients. The underlying principle being tested here is the adverse effect profile of this medication.

**Why the Correct Answer is Right**
Amphotericin B's dose-limiting toxicity is primarily nephrotoxicity, which arises from its ability to bind to and disrupt the function of cholesterol-rich membranes in renal cells. Specifically, amphotericin B binds to ergosterol in the fungal cell membrane, but in humans, it also binds to cholesterol in the renal tubular cells, leading to increased permeability and potassium release. This results in a decrease in glomerular filtration rate (GFR) and an increase in serum creatinine levels. The mechanism of nephrotoxicity is thought to be related to the formation of pores in the cell membrane, leading to cell lysis and death.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because while hypokalemia (potassium deficiency) is a common side effect of amphotericin B, it is not the dose-limiting toxicity.
**Option B:** This option is incorrect because while amphotericin B can cause fever and chills, these are not the primary dose-limiting toxicities.
**Option C:** This option is incorrect because while amphotericin B can cause liver enzyme elevations, this is not the dose-limiting toxicity.

**Clinical Pearl / High-Yield Fact**
To minimize the risk of nephrotoxicity, it is essential to ensure adequate hydration and electrolyte replacement in patients receiving amphotericin B. Additionally, monitoring of renal function, including serum creatinine levels and urine output, is crucial to detect early signs of nephrotoxicity.

**Correct Answer: C. Nephrotoxicity.