Which documents would help a forensic auditor identify instances of collusion between an employee and...

Email correspondence would be helpful for a forensic auditor to identify instances of collusion between an employee and a vendor to defraud the organization. Email communications can provide direct evidence of discussions and agreements made between parties involved in the collusion, offering insights into the fraudulent activities.

Forensic auditing best practices, which often emphasize the examination of electronic communications as part of the investigation into fraudulent activities.