Guys - it's legit. Geez! You're not being asked to supply any detail whatsoever - you're choosing between two graphics via a simple javascript - that's all. The company that designed it, Brighton Consulting, is here in Sydney on Kent Street.
http://www.brightonconsulting.com.au/phishquiz.html
Go here (Macarthur Credit Union Login page):
https://ib2.inetbank.net.au/macarthur/ebank.jsp to see the source page. I use this page every day to log into my banking.
This page is legit, as is the test. Lots of credit unions are doing it.
Another:
http://macquariecu.phishquiz.com.au/question.php