Answer:
A. fall by 2 percent.
Step-by-step explanation:
As the British pound lost 2 percent in purchasing power more than the U.S. dollars and according to the theory of purchasing power parity, exchange rates between currencies are in equilibrium when their purchasing power is the same in each of the two countries, the British pound in terms of U.S. dollars will fall by 2 percent, in order to return to equilibrium.