Answer:
A) voyages of European discovery in the 15th and 16th centuries.
Step-by-step explanation:
The Columbian Exchange is a system of exchange that developed after the arrival of Europeans to America. Due to the fact that America had developed independently from the rest of the world, many plants, animals and food were different between the two regions of the world. When contact was established, these items were traded, enriching many cultures all over the world.