Final answer:
Option b. Only a single direction arrow should connect the data store symbol to the process query symbol.
Step-by-step explanation:
In the given question, the options are discussing the proper creation of a systems flowchart that describes how a data entry clerk enters data from a source document into business event data. Based on the descriptions provided, option b. Only a single direction arrow should connect the data store symbol to the process query symbol, is the statement that describes whether the systems flowchart was created properly.