Answer: Appreciate
Step-by-step explanation:
When a country increases interest rates, it will lead to an appreciation in currency. This is because there will be more demand for the currency of the country because people will want to take advantage of the higher interest rates and make a gain.
As the demand for the currency increases but the supply stays the same, the value of the currency will appreciate.
With Australia taking up their interest rates, their dollar will appreciate in value.