What must individuals pass through when entering the Protected Area?

Individuals must pass through metal detectors and explosive detectors when entering the Protected Area to ensure the safety and security of the environment. Metal detectors are used to identify any metal objects that could pose a risk, such as weapons or tools that could be misused. Explosive detectors play a crucial role in identifying potentially dangerous substances, thus preventing any threats from entering the premises.

The combination of these two security measures serves to provide a robust protective barrier, ensuring that no harmful items or explosives are brought into the area. By utilizing both metal and explosive detectors, the facility can maintain a secure environment, effectively minimizing the risk of incidents that could jeopardize safety.

In contrast, other options such as manual checks, X-ray machines only, or random safety inspections lack the comprehensive approach required to thoroughly secure the entrance of a Protected Area. These singular methods may not effectively address all potential risks, especially those posed by metal objects or explosive materials.