Answer:
Level 1: Overall scene security for restriction of general public Level.
Step-by-step explanation:
The crime scene must be protected, cleaned, and registered before evidence is gathered. There needs to be awareness and documentation of potential pollution. You have to avoid cross-contamination. To maintain the chain of continuity, exposures must be recorded, stored, documented and secured.
Following the discovery of a crime scene, measures need to be taken to ensure and protect the scene from contamination. To protect the scene's integrity, law enforcement will take action to block the surrounding area and keep track of who's coming in and going out.