After the initial walk-through, who is now in authority of the crime scene, securing the safety of both people and crime

scene, especially the physical evidence?

the head crime scene investigator

the forensic scientists

the judge

the forensic pathologist

Crime Scene Investigator (CSI)

Explanation:

Crime Scene Investigators are responsible for protecting and gathering evidence at a crime scene.

Forensic Scientists work in a lab, they would not be present during crime scene.

Judges have nothing to do with this. Their responsibilities include determining the innocence of a person involved.

Like the forensic scientist, a Forensic Pathologist is another person who would be working in a lab. These are dead people doctors, and they are responsible for autopsies and determining cause of death via an autopsy.