**Core Concept**
OCD, or Obsessive-Compulsive Disorder, is a neuropsychiatric disorder characterized by intrusive thoughts (obsessions) and repetitive behaviors (compulsions) that an individual feels compelled to perform. The pharmacological management of OCD involves the use of selective serotonin reuptake inhibitors (SSRIs), which are the first-line treatment option.

**Why the Correct Answer is Right**
SSRIs, such as fluoxetine, sertraline, and paroxetine, work by inhibiting the reuptake of serotonin in the synaptic cleft, thereby increasing the concentration of serotonin available for neurotransmission. This leads to an increase in postsynaptic serotonin receptor activation, which in turn reduces the symptoms of OCD. SSRIs have been shown to be effective in reducing symptoms of OCD in a significant proportion of patients.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as it does not specify a particular class of medications, which would be more effective for OCD treatment.
* **Option B:** This option is incorrect as benzodiazepines, such as alprazolam, are not typically used as first-line treatment for OCD due to their potential for abuse and dependence.
* **Option C:** This option is incorrect as antipsychotics, such as haloperidol, may be used as adjunctive therapy in some cases of OCD, but they are not the first-line treatment option.

**Clinical Pearl / High-Yield Fact**
SSRIs should be continued for at least 6 months to a year before tapering off to assess long-term efficacy and to minimize the risk of relapse.

**Correct Answer:** C.