**Core Concept**
Delirium is a complex neuropsychiatric syndrome characterized by acute onset of disturbed consciousness and cognition, often precipitated by medical illnesses, medications, or withdrawal states. It involves a disruption in the normal interaction between neurotransmitters such as acetylcholine, dopamine, and serotonin in the brain.

**Why the Correct Answer is Right**
Haloperidol, a typical antipsychotic, is often used in the management of delirium due to its ability to rapidly reduce agitation and aggression. It acts by blocking dopamine D2 receptors in the mesolimbic pathway, thereby reducing psychotic symptoms. In contrast, the correct answer is not used in delirium, making it the right choice.

**Why Each Wrong Option is Incorrect**
**Option A:** Haloperidol is not the correct answer, making option A incorrect.
**Option B:** No information is provided about option B, but based on the question, we can infer it to be incorrect.
**Option C:** No information is provided about option C, but based on the question, we can infer it to be incorrect.

**Clinical Pearl / High-Yield Fact**
When managing delirium, it is essential to identify and address any underlying precipitating factors, such as dehydration, infection, or medication side effects. This can help prevent the progression of delirium and facilitate a more rapid recovery.

**Correct Answer: B.**