What action is NOT part of investigating the scene?

The action of making decisions on the suspect's guilt is not part of the investigatory process at the scene. When investigating a crime scene, the primary focus is on collecting and documenting evidence, observing conditions, and taking photographs to create a detailed record of the scene. Each of these actions contributes to building a comprehensive understanding of what happened, which can later inform conclusions about the case.

Determining a suspect's guilt involves evaluating all evidence and details gathered during the investigation and often occurs later in the legal process, during interviews, or in court settings. It requires careful analysis of the collected information and consideration of all potential factors, rather than immediate conclusions drawn at the scene of the crime. Therefore, the correct action highlighted here is focused on the aspects that are purely related to evidence collection and scene analysis, rather than judgment.