I was given a review audit for the close queue, and I had to
- Click the close button
- Choose the "off topic" radio button
- Click the "Vote to close" button
For a closeworthy question as an audit, clicking the "Close" button ought to suffice.
If it's a question that ought to stay open, I understand that going through the full process should happen before you "fail", as per In the review queue, audits should only fail (or pass) you once you actually would take action