**Core Concept**
The safe handling and disposal of cytotoxic drugs are crucial to prevent occupational exposure and minimize environmental contamination. Cytotoxic drugs are highly potent agents that can cause severe harm if not handled properly.

**Why the Correct Answer is Right**
Cytotoxic drugs are typically treated and disposed of through a process called incineration. This involves burning the drugs at high temperatures (usually above 1000°C) to break down the chemical compounds into harmless gases and ash. The incineration process is designed to destroy the chemical structure of the cytotoxic agents, rendering them inactive and non-toxic.

**Why Each Wrong Option is Incorrect**
**Option A:** Autoclaving is not effective in disposing of cytotoxic drugs, as the high temperatures and pressures used in the process may not be sufficient to break down the chemical bonds of these potent agents.

**Option B:** Chemical neutralization is not a recommended method for disposing of cytotoxic drugs, as it may not be effective in breaking down the chemical structure of these agents and may also generate hazardous byproducts.

**Option C:** Landfill disposal is not acceptable for cytotoxic drugs, as these agents can contaminate soil and groundwater if not disposed of properly.

**Clinical Pearl / High-Yield Fact**
Remember that cytotoxic drugs should always be handled and disposed of in accordance with local and national regulations, and that incineration is the recommended method for disposing of these agents to prevent occupational exposure and environmental contamination.

**Correct Answer: C. Incineration**