A. in lowlands and river valleys
B. in extensive and undulating regions
C. in hot and humid regions
D. around large cities in industrial societies
Correct Answer: Option D
D. around large cities in industrial societies
A. in lowlands and river valleys
B. in extensive and undulating regions
C. in hot and humid regions
D. around large cities in industrial societies
Correct Answer: Option D
D. around large cities in industrial societies
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