1pt Which statement best summarizes the ethnic diversity of Southeast Asia?
O A. The region lacks diversity because of its history of isolation from the rest of the world.
O B. The region's mainland areas tend to have a dominant ethnic group, while the island areas are more diverse.
O C. The region's rural areas are far more diverse than its urban centers.
O D. The region's coastal areas tend to lack diversity, while inland areas are home to many different ethnic group