Which behavior may indicate potential criminal activity?

Suspicious actions such as loitering or looking around nervously can indicate potential criminal activity because they often suggest that a person is behaving incongruously with their environment. For example, an individual who stands in one place for an extended period without a clear purpose or repeatedly checks their surroundings may be trying to avoid detection or assess security measures. These behaviors can act as warning signs that something may not be right, prompting security personnel to investigate further to prevent possible crimes or to ensure the safety of the area.

In contrast, gathering in groups to socialize typically does not indicate criminal intent; it is a common behavior seen in many social settings. Following safety protocols is a sign of responsible behavior and compliance with regulations, while workers taking breaks in designated areas demonstrates adherence to workplace policies. Therefore, these other choices do not align with the indications of potential criminal activity that unusual or suspicious behavior does.