**Core Concept**
The question is testing the student's knowledge of antiviral therapy for hepatitis B, specifically the ability to identify a drug that can induce complete histopathological resolution in patients with hepatitis B.

**Why the Correct Answer is Right**
Entecavir is a potent inhibitor of the hepatitis B virus (HBV) DNA polymerase, which is essential for viral replication. By inhibiting viral replication, entecavir can lead to a significant reduction in viral load and histological improvement in patients with chronic hepatitis B. This is achieved through its ability to suppress the transcription and replication of the HBV genome, ultimately resulting in the suppression of liver inflammation and fibrosis.

**Why Each Wrong Option is Incorrect**
* **Option A:** Lamivudine is another antiviral medication used to treat hepatitis B, but it is not associated with complete histopathological resolution.
* **Option B:** Adefovir is an antiviral medication used to treat hepatitis B, but it is not as effective as entecavir in inducing histopathological resolution.
* **Option D:** Interferon-alpha is an immunomodulatory therapy used to treat hepatitis B, but it is not as effective as entecavir in inducing complete histopathological resolution.

**Clinical Pearl / High-Yield Fact**
Entecavir is a preferred treatment option for patients with chronic hepatitis B due to its high efficacy and good tolerability profile.

**Correct Answer: C. Entecavir**