What is the Official Reserves Account (ORA), and why is it more important for countries under a fixed exchange rate regime than for ones under a floating exchange rate regime?

What will be an ideal response?

Answer: The ORA is the total reserves held by official monetary authorities within the country. Under a fixed exchange regime a country's currency is convertible into a fixed amount of another country's currency. To keep the relationship between currencies at equilibrium, it may become necessary for the government to buy or sell official reserves until the equilibrium is restored. Under a variable rate regime this is not necessary as exchange rates are allowed to change and official reserves no longer serve the same purpose as under the fixed rate regime.