Answer:
Step-by-step explanation:
As the senior auditor on the case, it would be my responsibility to make sure Carl is actually performing the tasks he was given.
First, I would take care of the important accounting issue and then i would ask Carl to give me a report of his work.
The report will help me determine if Carl did his assignment and understood it or not. If Carl gives a report that is very vague showing he does not understand it the way he should, that would confirm my suspicions.