Which of the following is NOT considered a type of third-party record?

The option identified as personal diaries is not considered a type of third-party record because they are private, personal documents created by an individual, reflecting their own thoughts, feelings, or events in their life. Unlike third-party records, which include documents generated by individuals not directly involved in the situation, personal diaries do not carry the objectivity or external validation that is typical of third-party sources.

In contrast, the other options—ambulance reports, medical records, and police reports—are composed by professionals or agencies that are not personally involved in the events described within those records. These documents serve as official records that provide information relevant to investigations or assessments of circumstances surrounding an incident, thus qualifying them as third-party records.