Which type of informant includes individuals such as bank employees or airport staff?

The correct choice emphasizes that non-criminal informants are individuals who can provide valuable information to law enforcement without having a criminal background or involvement in criminal activity. Examples of non-criminal informants include bank employees, airport staff, and other professionals who may observe suspicious behavior or have access to pertinent information regarding illegal activities. Their role is crucial since they can relay observations or insights that assist in investigations while not being part of the criminal world themselves.

Non-criminal informants often have firsthand knowledge of situations or events that may not be visible to police. Their employment in specific sectors allows them to notice atypical behavior that might indicate criminal activity, making them a key resource in gathering intelligence. This type of informant is typically seen as more reliable as they are less likely to have motives that could skew the information they provide compared to those involved in criminal activities.