What type of evidence includes written, audio, visual, or video documentation?

The correct answer is documentary evidence, which encompasses any form of documentation that can be used to support claims or establish facts in an investigation. This includes written materials such as reports, emails, and letters, as well as audio recordings, visual aids, and video footage. Documentary evidence is vital in private investigations as it provides tangible proof that can be presented in court or used to substantiate findings.

Understanding the nature of documentary evidence is crucial for private investigators, as this type of evidence often serves as the foundation for building a comprehensive case. The documentation can be analyzed, verified, and referenced, making it an essential aspect of the investigative process.

In contrast, other types of evidence do not encompass the same range of formats. For instance, physical evidence refers to tangible items that can be collected at a crime scene, such as fingerprints or weapons. Witness testimony involves statements made by individuals who have knowledge about the events being investigated but does not include the documentation aspect. Hearsay evidence consists of statements made outside of court that are not based on personal knowledge, and thus cannot be used as reliable evidence in a legal setting.