Which is an example of trace evidence?

• A. Fibers
• B. Blood
• C. Weapons
• D. Surveillance Footage

Answer: (A)

Trace evidence consists of tiny physical materials transferred during contact that require lab analysis to identify. Fibers fit this idea perfectly because they are small, often microscopic strands from clothing, upholstery, or carpets that can be transferred between a suspect and a scene or victim. Their small size and potential to link a person or item to a location make them a classic example of trace evidence, since they can be recovered and compared using microscopy and other tests to establish connections.

Blood, while valuable in investigations, is biological material and is typically categorized as biological or pattern evidence rather than trace evidence. Weapons are larger, tangible items not usually considered trace evidence, and surveillance footage is digital/documentary evidence, not trace material.