Final answer:
The control plan that would prevent this type of error is implementing a data validation process.
Step-by-step explanation:
The control plan that would prevent this type of error is implementing a data validation process.
This can be done by creating a validation rule that checks employee IDs for any inconsistencies or incorrect patterns, such as misreading certain numbers. For example, a rule can be set to flag any employee IDs that have a 9 in the position where a 7 should be.
By implementing data validation, errors like misreading 7s as 9s can be caught and corrected before the data is processed, ensuring accurate results.