What monitoring method should be used to verify a sales representative's expense report when he submits time and mileage while attending a family function?

Using location monitoring is the most appropriate method for verifying a sales representative's expense report, particularly when assessing time and mileage logged during a family function. This method allows an organization to track where the sales representative was during the time claimed and whether it aligns with the business-related travel necessary for their role.

Location monitoring can provide accurate data on the representative's activities by verifying if they were indeed at the locations they reported during business hours. This approach aligns with ensuring accountability and legitimacy in the reimbursement processes for expenses claimed by employees. Monitoring location can effectively prevent fraudulent claims and ensure that reimbursements accurately reflect work-related expenses.

In contrast, voicemail monitoring, monitoring email usage, and monitoring cellphone usage may not provide relevant data to verify travel claims or specific locations visited during the claimed time. These methods do not directly assess the sales representative’s physical presence or actions while submitting the expense report.