Which of the following option tells us the exchange rate at which demand for a currency is equal to its supply?

Equilibrium exchange rate

In floating exchange rate, the demand and supply forces determine the equilibrium exchange rate but it is not necessary that in floating exchange rate both demand and supply will always be equal. Even when demand is greater than supply or vice versa, still the exchange rate system will be floating exchange rate. The exchange rate at which demand for foreign currency is equal to its supply is called as Normal Rate or Equilibrium Rate of foreign exchange.