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A historian is awarded a grant to study the effects of industrial air pollution on sugarcane farms in Brazil. His research will focus on which major historical theme?

ADevelopment and transformation of social structures
BInteractions between humans and the environment
CDevelopment and interaction of cultures
DCreation, expansion, and interaction of political systems

Verified Answer :

I believe that the answer is B. interactions between humans and the environment

The answer is B. The effects of pollution and sugarcane farms means he'll be studying the interactions between humans and the environment.

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