**Core Concept**
Nevirapine is a non-nucleoside reverse transcriptase inhibitor (NNRTI) used in the treatment of HIV/AIDS. It works by binding to the reverse transcriptase enzyme, thereby inhibiting viral replication.

**Why the Correct Answer is Right**
Nevirapine binds to the p66 subunit of the reverse transcriptase enzyme, altering its conformation and leading to a decrease in viral replication. This mechanism of action is specific to NNRTIs, which are distinct from other classes of antiretroviral drugs such as nucleoside reverse transcriptase inhibitors (NRTIs) and protease inhibitors.

**Why Each Wrong Option is Incorrect**
**Option A:** Nevirapine is not a protease inhibitor, as it does not target the protease enzyme involved in viral replication.
**Option B:** Nevirapine is not a nucleoside reverse transcriptase inhibitor (NRTI), as it does not incorporate into the viral DNA like NRTIs do.
**Option C:** Nevirapine is not a integrase inhibitor, as it does not target the integrase enzyme involved in viral integration into the host genome.

**Clinical Pearl / High-Yield Fact**
Nevirapine is known for its potential to cause severe hepatotoxicity, particularly in women and in patients with pre-existing liver disease. Regular monitoring of liver function tests is essential when prescribing nevirapine.

**Correct Answer:** C. Non-nucleoside reverse transcriptase inhibitors (NNRTIs).