Which action best preserves the integrity of physical evidence in court?

• A. Handle with gloves as appropriate, document chain of custody, protect the scene, and avoid altering the item.
• B. Touch the item to test it.
• C. Move the item around for easier viewing.
• D. Allow viewers to manipulate the item freely.

Answer: (A)

Preserving the integrity of physical evidence hinges on preventing contamination, maintaining a documented chain of custody, and keeping the item in its original condition. Wearing gloves reduces the chance of transferring oils, fibers, or other residues onto the evidence. Documenting the chain of custody creates a clear, dated record of every person who handled the item, when, where, and why, which is essential for admissibility and for proving the item’s unaltered status. Protecting the scene helps ensure the evidence isn’t disturbed, degraded, or exposed to environmental factors, and avoiding any alteration preserves the evidence exactly as it was found.

Touching the item to test it can introduce contaminants or leave new residues, moving the item for easier viewing risks loss or damage and may change its condition, and allowing viewers to manipulate it freely invites tampering or unintended changes. Keeping those actions out of the process maintains the evidence in its most reliable state. This is why the option that includes gloves, chain-of-custody documentation, scene protection, and avoiding alteration is the best choice.