**Core Concept**
Procarbazine is an alkylating agent used in the treatment of various cancers, including Hodgkin's lymphoma and brain tumors. It is known to induce a disulfiram-like reaction, which can cause symptoms such as flushing, sweating, and nausea.

**Why the Correct Answer is Right**
Procarbazine works by alkylating DNA, thereby inhibiting DNA replication and cell division. The disulfiram-like reaction is thought to be due to the inhibition of aldehyde dehydrogenase, an enzyme involved in the breakdown of acetaldehyde, a toxic byproduct of alcohol metabolism. When alcohol is consumed, the accumulation of acetaldehyde can cause the symptoms associated with a disulfiram reaction. This is a critical consideration for patients taking procarbazine, as they may need to avoid alcohol or experience severe reactions if they consume it.

**Why Each Wrong Option is Incorrect**
**Option A:** Lomustine is another alkylating agent used in cancer treatment, but it is not associated with a disulfiram-like reaction. Lomustine works by cross-linking DNA strands, leading to cell death, but it does not affect aldehyde dehydrogenase.

**Option B:** L-Asparginase is an enzyme used to treat acute lymphoblastic leukemia. It works by depleting asparagine, an essential amino acid, thereby inhibiting cell growth and proliferation. L-Asparginase is not associated with a disulfiram-like reaction.

**Option D:** Busulfan is another alkylating agent used in cancer treatment, particularly for chronic myeloid leukemia. It works by cross-linking DNA strands, leading to cell death, but it is not associated with a disulfiram-like reaction.

**Clinical Pearl / High-Yield Fact**
It is essential for patients taking procarbazine to avoid alcohol or experience severe reactions, including flushing, sweating, and nausea. This is a critical consideration for patients taking this medication, and healthcare providers should counsel them accordingly.

**✓ Correct Answer: C. Procarbazine**