**Core Concept**
Haloperidol is a typical antipsychotic primarily used to treat schizophrenia and other psychoses, whereas anxiety disorders are typically managed with anxiolytics, antidepressants, or benzodiazepines.

**Why the Correct Answer is Right**
Haloperidol works by blocking dopamine D2 receptors, which is effective in treating psychotic symptoms. However, its use in anxiety is not established due to its potential to exacerbate anxiety and cause extrapyramidal side effects. In contrast, anxiolytics and benzodiazepines, such as alprazolam (Option B), act on GABA_A receptors to enhance inhibitory neurotransmission, reducing anxiety symptoms. Buspirone (Option C), a non-benzodiazepine anxiolytic, acts as a serotonin 5-HT1A receptor partial agonist, which helps alleviate anxiety without sedation or dependence. Propranolol (Option A) is a beta-blocker that can be used off-label for performance anxiety due to its ability to reduce physiological symptoms like tremors and tachycardia.

**Why Each Wrong Option is Incorrect**
**Option A:** Propranolol can be used for performance anxiety, making it incorrect as a choice for anxiety that is not related to physical symptoms.
**Option B:** Alprazolam is a benzodiazepine used for anxiety disorders, making it the opposite of the correct answer.
**Option C:** Buspirone is a non-benzodiazepine anxiolytic used for generalized anxiety disorder, which is a valid treatment option for anxiety.

**Clinical Pearl / High-Yield Fact**
When choosing an anxiolytic, consider the specific anxiety symptoms and comorbidities, as well as potential interactions with other medications. For instance, benzodiazepines like alprazolam can be effective for acute anxiety but may lead to dependence, while buspirone is a good option for generalized anxiety disorder.

**✓ Correct Answer: D. Haloperidol**