Final answer:
In the Find Unmatched Query Wizard, the first dialog box asks you to select the table or query to use as the basis for finding unmatched records.
Step-by-step explanation:
Computers and Technology
In the Find Unmatched Query Wizard, the first dialog box asks you to select the table or query that you want to use as the basis for finding unmatched records. You can choose a table or query that contains the records you want to compare with another table or query. For example, if you want to find unmatched customers in a database, you would choose the table or query that contains a list of all customers. This dialog box is important because it sets the foundation for the rest of the process.