Which of the following is a common sign of potential criminal behavior?

Nervousness can be a common sign of potential criminal behavior because it may indicate someone is experiencing anxiety or stress related to their actions. Individuals engaged in criminal activities often try to conceal their intentions, which can lead to physical signs of unease such as fidgeting, avoiding eye contact, or visibly sweating. Recognizing signs of nervousness can help security personnel remain vigilant and assess situations that may warrant further investigation.

Confidence, outspoken behavior, and visible identification badges typically do not correlate with potential criminal activities. Confidence can often be a positive trait, and while outspoken behavior can manifest in various contexts, it does not inherently suggest criminal intent. Likewise, visible identification badges are associated with authority and legitimacy, rather than signaling suspicious behavior. Understanding these distinctions helps security professionals in identifying those who may pose a threat.