What is meant by purchasing power parity (ppp)?
a. when a currency is worth more in terms of other currencies.
b. when a country lets the value of its currency be determined in the exchange rate market.
c. an exchange rate policy where the government usually allows the exchange rate to be set by the market, but in some cases, especially if the exchange rate seems to be moving rapidly in one direction, the central bank will intervene.
d. the exchange rate that equalizes the prices of internationally traded goods across countries?