The correct answer to this open question is the following.
Your question is missing some important pieces of information or numbers.
What is the subject of the auditory? What are the discrepancies? Based on what you will be recommending solutions to solve discrepancies.
However, trying to help you with something, we can comment on the following general terms.
As a summer intern for AAA Auditing, Inc., you can help resolve discrepancies by showing the correct processes you used in your auditory. For instance, you can show the numbers reported in the accounts.
You will show the numbers verified in the checkmarks, showing accounts debited and credited in Merchandise Inventory, Estimated Returns Inventory, or Cost of Merchandise Sold.
This solid information can be interpreted but is a good way to prove how the numbers are in the department. So showing these numbers can be a solid proof of the state of the processes and will help you solve discrepacies.