**Core Concept**
Herbert's pits are small depressions or pits on the surface of the liver that are seen in the context of chronic passive congestion due to right-sided heart failure. They are formed due to the rupture of the small hepatic veins.

**Why the Correct Answer is Right**
Chronic passive congestion leads to the dilation of the hepatic sinusoids, which increases the pressure within the liver. This increased pressure causes the rupture of the small hepatic veins, resulting in the formation of Herbert's pits. The liver becomes congested, and the liver cells become swollen, leading to the formation of these characteristic pits.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because Herbert's pits are not associated with chronic active hepatitis.
**Option B:** This option is incorrect because regenerative nodules are seen in cirrhosis, not in chronic passive congestion.
**Option C:** This option is incorrect because Mallory-Denk bodies are seen in alcoholic hepatitis, not in chronic passive congestion.

**Clinical Pearl / High-Yield Fact**
Herbert's pits are a characteristic finding in chronic passive congestion due to right-sided heart failure, and they can be seen on liver biopsy or imaging studies.

**Correct Answer: D. Liver in chronic passive congestion due to right-sided heart failure.**