What is the correct approach for collecting evidence on-site?

The correct approach for collecting evidence on-site emphasizes the importance of both documenting and properly handling the evidence. Documenting in place ensures that the context of the evidence is preserved, allowing for a clearer understanding of the scene and how the evidence relates to the investigation as a whole. This includes noting its location, condition, and any pertinent details surrounding the scene.

Using proper containers is equally important as it helps to protect the integrity of the evidence during transport. Different types of evidence may require specific types of containers to avoid contamination or degradation. For example, fragile items might require a padded container, while chemical samples might need sealed and sterile containers to prevent reactions with external elements.

This comprehensive approach to evidence collection—thorough documentation combined with appropriate handling and containment—ensures that the evidence remains admissible in court and that the investigation can be conducted effectively. This level of care is not just best practice in forensic work; it's critical for maintaining the chain of custody and supporting the integrity of the investigator's conclusions.