A data flow diagram (DFD) is a graphical representation of the flow of information between outsourcers and third parties, as well as within a system or process. It shows the sources and destinations of data, the processes that transform data, the data stores that hold data, and the data flows that connect them. A DFD can help to understand and refine the business processes or systems that involve data exchange with external entities. A DFD can also help to identify potential risks and vulnerabilities in the data flows, such as data leakage, data corruption, data loss, or unauthorized access.
The other options are incorrect because they do not match the definition of a visual representation of data flows. A configuration standard (A) is a set of rules or guidelines that define how a system or process should be configured, such as hardware, software, or network settings. An audit log report (B) is a record of the activities or events that occurred in a system or process, such as user actions, system changes, or security incidents. A network diagram is a graphical representation of the physical or logical connections between devices or nodes in a network, such as routers, switches, servers, or computers. References:
https://www.visual-paradigm.com/tutorials/data-flow-diagram-dfd.jsp
https://www.lucidchart.com/pages/data-flow-diagram