___________ : when the value of a nation's currency is allowed to fluctuate according to the foreign exchange market. 
 a. gold standard 
 b. fixed exchange rate 
 c. currency calculation 
 d. floating exchange rate user: the two major types of transactions that affect the international flow of money are: 
 a. balance of payments; balance of credits 
 b. debits; credits 
 c. trade in goods and services; capital flows 
 d. flows of financial capital; flows of payments