**Core Concept**
Alcohol withdrawal is a clinical syndrome that occurs in individuals who have been consuming alcohol chronically and suddenly stop or significantly reduce their intake. This condition can manifest with symptoms ranging from mild anxiety and tremors to severe seizures and delirium tremens.

**Why the Correct Answer is Right**
The management of alcohol withdrawal involves the use of medications that help to reduce the severity of symptoms and prevent relapse. Benzodiazepines, such as chlordiazepoxide and diazepam, are commonly used for this purpose. They work by enhancing the activity of the neurotransmitter gamma-aminobutyric acid (GABA) in the brain, which has an inhibitory effect on neuronal activity and helps to reduce the symptoms of withdrawal.

**Why Each Wrong Option is Incorrect**
* **Option A:** Chlordiazepoxide is a benzodiazepine and is used to prevent relapse and maintain abstinence in cases of alcohol withdrawal. It is a key treatment option for this condition.
* **Option B:** Diazepam is another benzodiazepine that is used to manage alcohol withdrawal symptoms. It is effective in reducing the severity of symptoms and preventing relapse.
* **Option D:** Phenobarbital is a barbiturate that is sometimes used in the management of alcohol withdrawal, particularly in cases where benzodiazepines are contraindicated. However, it is not as commonly used as benzodiazepines and is not typically considered a first-line treatment.

**Clinical Pearl / High-Yield Fact**
In cases of alcohol withdrawal, it's essential to taper off benzodiazepines gradually to prevent withdrawal symptoms from recurring. A common tapering schedule involves reducing the dose by 10-20% every 24-48 hours.

**Correct Answer:** D.