**Core Concept:** Inquest is a judicial process conducted to determine the cause of death, especially when death occurs under suspicious circumstances, in a natural death, or in police custody. The investigating authority may delegate the task to a medical officer.

**Why the Correct Answer is Right:** The correct answer is **C. Coroner**. A coroner is a public officer who inquests into deaths of unknown cause or suspicious circumstances, including those occurring in police custody. The coroner's role involves conducting autopsies, interviewing witnesses, and collecting evidence to determine the cause and manner of death.

**Why Each Wrong Option is Incorrect:**

A. **A. Medical Officer:** While a medical officer may be involved in conducting an inquest, the role is not limited to them. A coroner is the primary authority responsible for investigating suspicious deaths, including those in police custody.

B. **B. Police Officer:** Police officers are responsible for maintaining law and order, apprehending suspects, and investigating crimes. They do not exclusively handle inquiries into deaths occurring in their custody.

D. **D. Public Prosecutor:** A public prosecutor represents the state in legal matters, including criminal cases. They do not solely investigate deaths occurring in police custody.

**Clinical Pearl:** In the context of medical students preparing for exams like NEET PG, this topic highlights the importance of understanding the roles and jurisdictions of different authorities involved in forensic medicine. Familiarizing yourself with the roles of coroners, medical officers, police officers, and public prosecutors can help in identifying and understanding the roles of various professionals during an inquest.

**Correct Answer: C. Coroner**

Deaths occurring in police custody are typically investigated by the coroner, who is a public official responsible for conducting inquests into deaths of unknown cause or suspicious circumstances. The involvement of other professionals like medical officers, police officers, and public prosecutors is often secondary to the coroner's primary responsibility. Understanding these roles is crucial for medical students preparing for exams like NEET PG as it emphasizes the importance of understanding the jurisdictions of professionals in forensic medicine.