I just passed a review audit in the First Posts review. I passed it on an "I'm having this problem too" answer by downvoting it. Where it says that I passed the audit, it lists a few appropriate actions, among those actions is voting to close:
The strange thing is that this is an answer and, of course, answers can't be closed. I guess that this is because the same text is used for passed review audits on both questions and answers, but in this case it doesn't make any sense. I therefore think that it would be better to show a different message for answers and only show the current one for questions. It would be possible to use the same message for passed review audits on answers in First posts as the one for passed review audits in Late Answers, since, if my memory is correct, the one in Late Answers is the same except that it doesn't mention voting to close.
I therefore think that the "voting to close" should be removed from the message for passed review audits on answers, as voting to close an answer doesn't make any sense.