Chain of Custody is defined as?

• A. Contact wound
• B. Cyanosis
• C. Chain of Custody
• D. Carbon dioxide

Answer: (C)

The main concept being tested is maintaining a documented, unbroken trail of evidence from the moment it is collected until it is presented in court, ensuring its integrity. This means every transfer, handling, and change in custody is logged with who handled it, when, and how it was stored or packaged, often using a chain of custody form. This careful tracking prevents tampering, loss, or contamination and supports the admissibility of the evidence in proceedings. The other terms listed—describing a type of wound, a symptom of poor oxygenation, or a chemical/physiological substance—do not define how evidence is tracked and protected, so they don’t fit the concept of chain of custody.