Final answer:
The employees are serving the function of Data Visualization, which involves presenting data in a visual format to aid understanding and interpretation.
Step-by-step explanation:
The employees who take data from a management information system and compile it into a report that includes graphs, charts, and a PowerPoint presentation are serving the function of Data Visualization. Data visualization involves presenting data in a visual format, such as graphs and charts, to aid understanding and interpretation. It helps to communicate complex information effectively and enables decision-making based on the patterns and trends revealed in the data.