**Core Concept**
Parkinsonism is a neurological disorder characterized by tremors, rigidity, and bradykinesia. The treatment of Parkinsonism often involves dopamine replacement therapy. However, certain medications can cause an exacerbation of Parkinsonian symptoms, known as neuroleptic-induced Parkinsonism.

**Why the Correct Answer is Right**
The correct answer is likely a medication that blocks dopamine receptors in the nigrostriatal pathway. This pathway is responsible for motor control and is affected in Parkinsonism. The medication that is most likely to cause this adverse effect is a typical antipsychotic, which blocks dopamine D2 receptors. This blockade can exacerbate Parkinsonian symptoms by reducing the amount of dopamine available for motor control. The affected nigrostriatal pathway is responsible for coordinating movement, and blocking dopamine receptors in this pathway can lead to the characteristic symptoms of Parkinsonism, such as tremors, rigidity, and bradykinesia.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because while certain antidepressants may affect dopamine levels, they are not typically associated with neuroleptic-induced Parkinsonism.
* **Option B:** This option is incorrect because while certain antihistamines may have anticholinergic effects, they are not typically associated with neuroleptic-induced Parkinsonism.
* **Option D:** This option is incorrect because while certain antihypertensive medications may have central effects, they are not typically associated with neuroleptic-induced Parkinsonism.

**Clinical Pearl / High-Yield Fact**
Neuroleptic-induced Parkinsonism can be prevented by using atypical antipsychotics, which have a lower affinity for dopamine D2 receptors. However, if typical antipsychotics are used, patients should be monitored closely for signs of Parkinsonism, and dose adjustments may be necessary to mitigate these effects.

**Correct Answer: C. Haloperidol**