**Core Concept**
Post mortem caloricity refers to the phenomenon where the body temperature remains elevated or even increases after death, instead of the expected decrease. This occurs due to the ongoing metabolic processes within the body's cells, particularly in the liver and muscles.

**Why the Correct Answer is Right**
Post mortem caloricity is a result of the body's continued metabolic activity, primarily due to the breakdown of glycogen to glucose and the subsequent glycolysis in the liver and muscles. This process is facilitated by the enzyme glycogen phosphorylase, which is activated in response to the lack of insulin and the presence of epinephrine after death. The continued production of ATP through glycolysis leads to the maintenance of body temperature.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is a distractor and does not relate to the phenomenon of post mortem caloricity.
**Option B:** This option is incorrect because it refers to another concept, not related to post mortem caloricity.
**Option C:** This option is incorrect because it is not the correct answer to the question about post mortem caloricity.

**Clinical Pearl / High-Yield Fact**
It's essential to note that post mortem caloricity can be influenced by factors such as the body's glycogen stores, the ambient temperature, and the presence of any underlying metabolic disorders. This phenomenon can be relevant in forensic pathology and can provide valuable information about the circumstances surrounding death.

**Correct Answer:** D.