Which is an appropriate action for an investigator when trying to appear distracted?

Bringing a magazine or book is an appropriate action for an investigator trying to appear distracted because it provides a tangible activity that can effectively divert attention. This choice allows the investigator to create the appearance of being absorbed in something else, making them less of a focal point and potentially reducing suspicions from suspects. It also allows for the opportunity to occasionally observe the surroundings while still maintaining the façade of being preoccupied.

In contrast, standing with arms crossed might communicate defensiveness or disinterest rather than distraction. Making frequent eye contact with suspects would likely attract their attention and change their behavior, as it indicates engagement rather than distraction. Engaging in conversations with others could also shift the focus away from observation, but it may not create the same level of perceived distraction as reading a book or magazine, which is a more passive and solitary activity.