**Core Concept**
Marbling of tissue refers to the appearance of fat droplets or lipid accumulation within tissues, often observed in conditions like fatty liver disease, myocardial infarction, or conditions involving abnormal lipid metabolism. This phenomenon is associated with the disruption of cellular membrane integrity, leading to the leakage of lipids into the extracellular space.

**Why the Correct Answer is Right**
The marbling of tissue is typically noticed during autopsy, where it is observed as a yellowish or creamy discoloration of the affected organ, such as the liver or heart. This is due to the accumulation of triglycerides or other lipids within the tissue, which can occur due to various pathological processes, including necrosis, inflammation, or metabolic disorders. The presence of marbling can be indicative of a range of conditions, including alcoholic liver disease, non-alcoholic fatty liver disease (NAFLD), or myocardial infarction.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not directly relate to the appearance of fat droplets within tissues.
**Option B:** This option is incorrect because it does not accurately describe the phenomenon of marbling.
**Option C:** This option is incorrect because it is not a recognized term in pathology or medicine.

**Clinical Pearl / High-Yield Fact**
Marbling of tissue is often associated with conditions involving abnormal lipid metabolism, and its presence can be an important diagnostic clue in the post-mortem examination of individuals who have died from liver or cardiac disease. A classic example of marbling is the "yellow liver" seen in individuals with chronic alcoholism.

**Correct Answer:** D.