Questions Refer to the Image Below

Questions refer to the image below. Engraving by Italian explorer Savorgnan de Brazza shows women of the West African
Bateke tribe working in corn plantations.
-Based on your knowledge of world history and the image above, the Columbian Exchange precipitated which of the following environmental trends?

A) Traditional peasant agriculture persisted.
B) Silver became the driving force in transoceanic trade.
C) Diseases from Europe nearly annihilated people in Africa.
D) Tropical forests were destroyed to produce cash crops.