**Core Concept**
In forensic medicine, exhumation refers to the process of digging up a deceased body from the ground for legal, investigative, or post-mortem purposes. The authority to authorize such a procedure is strictly defined by law to ensure legal validity and prevent misuse.

**Why the Correct Answer is Right**
The Executive Magistrate has the legal authority under the Indian Evidence Act and the Indian Penal Code to grant permission for exhumation. This officer is empowered to issue orders in matters related to the recovery or examination of a body, especially when there is a need for further investigation or post-mortem. The Executive Magistrate acts as a judicial officer with administrative responsibility in local areas, making them the appropriate authority for such procedural actions.

**Why Each Wrong Option is Incorrect**
Option A: The Chief Judicial Magistrate deals with serious criminal cases and is not the primary authority for routine exhumation orders.
Option C: A police officer has investigative powers but lacks judicial authority to pass legal orders for exhumation.
Option D: The Session Judge handles serious criminal trials and is not involved in routine exhumation procedures.

**Clinical Pearl / High-Yield Fact**
Always remember: **Only an Executive Magistrate can pass an order for exhumation**—this is a key point in forensic procedures and often tested in NEET PG and AIIMS exams.

✓ Correct Answer: B. Executive magistrate