Answer:
C. People were able to pay less money for foreign goods.
Explanation:
Trade among different nations, societies, and states, always reduces the costs of goods and services accross the board, and there are many economic theories that explain why: the absolute advantage of Adam Smith, the comparative advantage of David Ricardo, or the Hecksher-Ohlin Model.
In the medieval world, this was no exception, and since the Muslims controlled a vast area between Europe and East Asia, they acted as the kingmarkers in international trade between the two regions (and between the Muslim controlled-regions themselves), which led to the reduction of the price of many goods and services.
