## **Core Concept**
The enquiry into the circumstances of death is a crucial process in determining the cause and manner of death. This process involves a thorough investigation into the events surrounding the death. It is an essential aspect of forensic medicine and public health.

## **Why the Correct Answer is Right**
Inquiry into the circumstances of death is commonly referred to as **Inquest**. An inquest is a judicial inquiry in common law jurisdictions, usually conducted to determine the cause of a person's death. It is often mandatory for deaths that are sudden, unexpected, or under suspicious circumstances. The primary goal of an inquest is to establish the cause and manner of death, which can have significant implications for legal, insurance, and public health purposes.

## **Why Each Wrong Option is Incorrect**
- **Option A:** While autopsy refers to the examination of a deceased person to determine the cause of death, it does not encompass the broader investigation into the circumstances surrounding the death.
- **Option B:** Post-mortem examination is essentially synonymous with autopsy and, like option A, does not cover the enquiry into the circumstances of death.
- **Option C:** Although a police inquiry may be part of the process of investigating a death, it is not the specific term used for the enquiry into the circumstances of death in a legal or medical context.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that an **Inquest** is specifically focused on determining the cause and circumstances of death, often with legal implications. This term is frequently tested in exams related to forensic medicine and is crucial for understanding the intersection of law and medicine.

## **Correct Answer:** D. Inquest.