Which of the following is an indicator of human smuggling?

The presence of a driver in possession of all identification documents serves as a significant indicator of human smuggling. In many instances, smugglers may travel with individuals who do not have proper identification or who have had their documents taken away as a means of control, making it easier to exploit them during the illicit transport process. When a driver has all necessary identification, it could suggest an effort to present a façade of legitimacy while actually engaging in smuggling activities. This can include having valid licenses and other official documents that are often required at checkpoints, which may imply an intent to circumvent detection by authorities.

Other options like the driver lacking a communication device may not directly relate to smuggling, as it could simply indicate a personal choice. Assembling a large group in a public area could be a common occurrence unrelated to smuggling; such gatherings can happen for numerous innocent reasons. Lastly, traveling with known family members typically does not indicate smuggling; it often suggests a legitimate familial relationship rather than an effort to conceal the transportation of individuals for illicit purposes.