This question is to test your knowledge of the proper steps to take at the very beginning of a project. There are a few different answers that all lead to the same thing. You need to know the scope of the audit. You need to see exactly what you're looking at. It's highly unlikely that you'll be auditing an entire company yourself as most publicly traded companies are far too large for one person to handle.
You'll want to have a scoping meeting to decide what everyone will be looking at or if the contract hasn't been arranged, a contract meeting.