**Core Concept**
Integrase inhibitors are a class of antiretroviral drugs used to treat HIV infection by blocking the integrase enzyme, which is essential for the integration of viral DNA into the host cell genome.

**Why the Correct Answer is Right**
The correct answer is a specific integrase inhibitor that works by binding to the integrase enzyme, preventing the integration of viral DNA into the host cell genome. This mechanism of action is crucial in suppressing viral replication and reducing the viral load in HIV-infected individuals. The integrase enzyme is a key target for antiretroviral therapy, and inhibitors like the correct answer have revolutionized the treatment of HIV/AIDS.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is a different class of antiretroviral drugs that works through a different mechanism of action, such as protease inhibitors or reverse transcriptase inhibitors.
**Option B:** This option is incorrect because it is not a licensed integrase inhibitor for the treatment of HIV infection.
**Option C:** This option is incorrect because it is a different class of antiretroviral drugs that works through a different mechanism of action, such as entry inhibitors or fusion inhibitors.

**Clinical Pearl / High-Yield Fact**
It is essential to note that integrase inhibitors have a unique resistance profile and are often used in combination with other antiretroviral drugs to prevent the development of resistance.

**Correct Answer:** C. Raltegravir