**Core Concept**
The management of uncomplicated alcohol withdrawal involves the use of medications that reduce the severity of symptoms such as tremors, anxiety, and seizures. Benzodiazepines are the primary treatment choice due to their effectiveness in alleviating these symptoms.

**Why the Correct Answer is Right**
The correct answer is a benzodiazepine. Benzodiazepines work by enhancing the activity of the neurotransmitter gamma-aminobutyric acid (GABA), which has a calming effect on the nervous system. They bind to GABA_A receptors, increasing the frequency of chloride channel opening, which leads to hyperpolarization of neurons and a decrease in neuronal excitability. This mechanism helps to reduce the symptoms of alcohol withdrawal by counteracting the excitatory effects of the neurotransmitter glutamate.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because anticonvulsants, such as phenytoin, are used to treat seizures, but they are not the primary treatment for uncomplicated alcohol withdrawal.
**Option B:** This option is incorrect because antipsychotics are not typically used to treat alcohol withdrawal, although they may be used to manage symptoms of psychosis in some cases.
**Option C:** This option is incorrect because barbiturates, such as phenobarbital, are central nervous system depressants and can exacerbate respiratory depression in patients with alcohol withdrawal.

**Clinical Pearl / High-Yield Fact**
Benzodiazepines should be tapered off gradually to avoid precipitating withdrawal symptoms in patients with a history of dependence.

**Correct Answer:** A. Chlordiazepoxide