Which of these is a recognized type of secondhand information?

The correct choice regarding recognized types of secondhand information is represented by good citizen informants. These individuals provide information that is typically relayed to law enforcement, often based on their observations or experiences rather than firsthand knowledge from direct involvement in an incident. This makes the information they supply secondary, as it is not derived from the original source but rather passed along from an observer to a law enforcement officer.

Other types of secondhand information can include things like newspaper articles, where information is compiled and reported by journalists, generally based on the accounts of others. However, witnesses present at a scene offer firsthand accounts of events they have directly experienced, classifying their information as primary rather than secondary. Similarly, the officer’s own deductions are personal interpretations and conclusions based on their own observations or experiences, which also falls under firsthand information. Thus, the distinction lies in the level of direct experience with the incident, with good citizen informants providing a clear example of secondhand information.