Answer:
A. What happens to unemployment in the short run if inflation is expected to be 0%? - Unemployment will fall because the central bank has injected money into the economy, yet inflation remains low. This scenario leads to a higher employment rate.
B. What happens to unemployment in the short run if citizens of Australia have adaptive expectations? - Australians will expect inflation to go back to hovering around 3%, and will reduce investment, this will make unemployment increase,
C. What happens to unemployment in the short run if citizens of Australia have rational expectations? - Australians will find it profitable to hire in the short-run because their real money balances are high because inflation is very low.