Answer:
Flexible
Step-by-step explanation:
A flexible exchange rate is one determined by the forces of market demand and supply. The apex bank of a country that practices this exchange rate regime never manages comes into the market to manage its currency price. The United States is an example of a flexible exchange rate system
A floating exchange rate is different from a managed floating exchange rate in that, managed floating sometimes allows a country's central bank to intervene in the Foreign exchange market in a bid to avoid the free fall of their local currency.
Nigeria is a good example of manged-floating exchange rate
Fixed exchange rate occurs when the central bank pegged the value of its currency against a vehicle currency.
Morocco is an example of a country that operates a fixed exchange rate system