**Core Concept**
The question is testing the student's knowledge of anxiolytic medications, which are a class of drugs used to treat anxiety disorders. Anxiolytic drugs work by enhancing the activity of inhibitory neurotransmitters, such as GABA, in the brain.

**Why the Correct Answer is Right**
The correct answer is a benzodiazepine, a type of anxiolytic medication that acts by binding to the GABA_A receptor, increasing the frequency of chloride channel opening and enhancing the inhibitory effects of GABA. This results in sedative, hypnotic, anxiolytic, anticonvulsant, and muscle relaxant properties. Benzodiazepines are commonly used to treat anxiety disorders, insomnia, and seizures.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it is a type of antidepressant medication that is used to treat depression, not anxiety.
* **Option B:** This option is incorrect because it is a type of antipsychotic medication that is used to treat schizophrenia and bipolar disorder, not anxiety.
* **Option C:** This option is incorrect because it is a type of antihistamine medication that is used to treat allergic reactions, not anxiety.

**Clinical Pearl / High-Yield Fact**
Benzodiazepines can be habit-forming and should be used for short periods only. They can also interact with other medications, such as opioids, and increase the risk of respiratory depression.

**Correct Answer:** C. Alprazolam (Xanax) is a common benzodiazepine used as an anxiolytic medication.