The question got a lot of views quickly and then was automatically protected after three none answers were posted by 1 rep users.
As this happened ages ago (Aug 5th), I have unprotected the question and now 1 rep users can answer it again, consider contacting the user you mention in this post if you can.
There are no reviews for protected questions, protection is a privilege.
To learn more about why the question got protected, you can read this meta post.