What is it called when market forces determine the exchange rates of currencies?

In transitioning from communist rule, the Eastern European and former Soviet States had to

a. create new government institutions and shift to a private ownership economy. b. maintain the communist government and shift to a private ownership economy. c. create new government institutions and maintain a state-owned economy. d. maintain the communist government and maintain the private ownership economy. e. maintain the communist government and maintain the state-owned economy.

The heart of decision making and attempts to understand and explain it rests on

a. the government politics model. b. expected utility theory. c. groupthink. d. the process of evaluating and choosing among alternatives.