What is the ‘two-person rule’ in nuclear operations?

The two-person rule in nuclear operations is fundamentally a safety policy that mandates the presence of two authorized individuals during critical nuclear operations. This rule is crucial for maintaining safety and security when handling nuclear materials or equipment. The idea is rooted in preventing unauthorized access and avoiding the potential for errors or intentional malicious acts. By ensuring that two people are involved in critical operations, this policy adds a layer of oversight, discourages complacency, and fosters accountability, which heightens the overall security posture in a nuclear facility.

While other choices touch on important aspects of nuclear safety and security, they do not capture the core intent of the two-person rule, which is specifically about operational safety and the necessity of mutual oversight in activities involving nuclear materials. Consequently, the essence of the two-person rule is about safeguarding the process through collaborative engagement, which is why it is the correct answer.