Which zone is restricted to only those actively processing the crime scene?

The correct choice is the Yellow Zone, which is designated as a restricted area only for individuals actively involved in processing the crime scene. This zone is critical for maintaining the integrity of the investigation, as it limits access to those who are directly working to collect evidence, document findings, and analyze the scene.

By restricting entry to only trained personnel, the Yellow Zone helps to prevent contamination of evidence, maintains the original condition of the scene, and ensures that any potential evidence is not disturbed or altered by unauthorized individuals. This practice is a crucial aspect of crime scene management and helps uphold the chain of custody for evidence collected at the scene.

In contrast, the Green Zone typically refers to areas that are considered safe or neutral, where people not directly involved with the crime scene can gather or manage other operations. The Red Zone usually indicates a hazardous area, often requiring additional safety measures for those who may enter. The Blue Zone may be designated for law enforcement or other administrative functions, but it does not have the same strict access limitations as the Yellow Zone.