**Core Concept**
A medical inquest is a judicial inquiry into the cause and circumstances of a death, particularly in cases where the cause is suspicious or unnatural. The international community has established guidelines for conducting inquests to ensure that they are fair, thorough, and in accordance with human rights standards.

**Why the Correct Answer is Right**
The best type of inquest at the international level is an **inquest by a judicial officer**. This type of inquest is conducted by a judge or magistrate who has the authority to summon witnesses, gather evidence, and make findings of fact. This approach ensures that the inquest is impartial, independent, and conducted in accordance with the rule of law. In contrast to inquests conducted by coroners or other officials, judicial inquests provide a higher level of transparency and accountability.

**Why Each Wrong Option is Incorrect**
* **Option A:** An inquest by a coroner may not be sufficient, as coroners may not have the same level of judicial authority or independence as a judge or magistrate.
* **Option B:** An inquest by a police officer may be compromised by the officer's involvement in the investigation, which could lead to a biased or incomplete inquiry.
* **Option C:** An inquest by a medical expert may be limited in scope, as it may focus primarily on the medical aspects of the death rather than the broader circumstances and context.

**Clinical Pearl / High-Yield Fact**
In international human rights law, the right to a fair and impartial inquest is recognized as a fundamental right, and states are obligated to ensure that inquests are conducted in accordance with the principles of independence, impartiality, and transparency.

**Correct Answer: C. Inquest by a judicial officer. A judicial inquest is the best type of inquest at the international level.**