Has been withdrawn!
Answer: Withdrawn
The question was withdrawn because it was excessively Australian-centric and didn't add much to anything.
This question was not a test of your understanding of MMT. Rather it was meant to be a test of the way unfilled vacancies (which is the term used by the Australian statistician to describe posted vacancies by employers) and employment interact to create labour demand in a labour market and the scales at which component of labour demand operate.
Overall, it wasn't a very good question and to avoid wasting peoples' time I withdrew it.