What is the correct sequence of steps involved in the first response by laboratory forensics staff?

The sequence that identifies the correct order of steps for laboratory forensics staff during their first response is rooted in the standard procedures and established principles of handling potential evidence at a scene.

Starting with the first step in option B, the immediate prioritization of ensuring safety is crucial. Before any evidence can be processed or examined, it is vital to ensure that the scene is secure and that all personnel are safe from ongoing or potential threats. This includes assessing the environment for hazards, which must be clearly established to avoid compromising human safety.

Following that, securing the scene, including preserving the evidence, is essential. The forensic staff must take steps to control the area to prevent any tampering or loss of physical evidence. Once the scene is secure, the next step often involves documenting the scene thoroughly. This includes taking photographs, notes, and sketches to ensure the integrity of the information gathered.

The analytical processes, including examining evidence and conducting tests, occur after these foundational steps. This establishes a robust protocol for laboratory forensics staff, ensuring that they maintain the integrity of the investigation from the very beginning.

The sequence outlined in option B reflects these fundamental principles by prioritizing safety, security, documentation, examination, and ultimately analysis, which align with best practices in forensic response.