**Core Concept**
Hepatocellular carcinoma (HCC) is a primary malignancy of the liver with a complex etiology involving viral infections, genetic predisposition, and environmental factors. Chronic liver disease and cirrhosis are significant risk factors for the development of HCC.

**Why the Correct Answer is Right**
HBV (Hepatitis B virus) infection is a well-established risk factor for the development of HCC. The mechanism involves chronic inflammation and integration of HBV DNA into the host genome, leading to genetic mutations and oncogenesis. HBV-related HCC is more common in regions with high HBV prevalence, such as Asia and Africa. The association between HBV and HCC has been extensively documented in epidemiological studies.

**Why Each Wrong Option is Incorrect**
**Option A:** Most prevalent malignancy - While HCC is a common liver malignancy, it is not the most prevalent malignancy overall. Other cancers, such as lung, breast, and colorectal cancer, have higher incidence rates globally.
**Option B:** Commonest liver tumor - HCC is the most common primary liver malignancy, but not the most common liver tumor overall. Benign liver tumors, such as hemangiomas and adenomas, are more common than HCC.
**Option D:** Patient present in early stage - Unfortunately, many patients with HCC present in advanced stages, which affects prognosis and treatment outcomes.

**Clinical Pearl / High-Yield Fact**
HBV vaccination is a crucial preventive measure against HCC, particularly in high-risk populations. The World Health Organization recommends universal HBV vaccination in countries with high HBV prevalence.

**✓ Correct Answer: C. HBV predisposes**