Audits are automatically generated by the system. The exact criteria for the close queue have not been published to the best of my knowledge, however the current criteria for the reopen queue are (as defined by Shog):
- Recently asked
- Score between 5 and 15 (inclusive)
- Never locked, migrated, or deleted
- No close votes or downvotes, ever
- (On Stack Overflow) at least 100 views
So it stands to reason that the criteria for the close vote queue are similar since the close and reopen review queues are very related.
It deserves mentioning those that the criteria are always being tweaked and may be changed in the near future. In fact, there is currently a question on meta inviting discussing modifications to the criteria so it may change soon.
It has also been said that once any action that counters one of the above criteria will remove the post as being a candidate for a future review audit, so the proper course of action when you encounter a disputable review is to perform a counter action (so a "good" posts in a close/reopen queue will be removed when you vote to close). If you don't know if it is disputable however, you can ask a question here to get feedback as you've done here.
As for this specific review audit, I agree that it is not a good review audit and I have voted to close, however, because it met the aforementioned criteria when the audit was generated, it was selected. But once you voted to close it outside of the queue, it was immediately not longer eligible for being a future audit post.