What is the best explanation for the population density in the red circled area? a) the region is dominated by a desert climate. b) the region has suffered civil wars and invasions. c) the region is home to trade, industry, and adequate precipitation. d) the region was once the central focus of the trans-atlantic slave trade.

The correct answer is - C) The region is home to trade, industry, and adequate precipitation.

The region that is circled on the map is West Africa, and this is the most densely inhabited region on the African continent. This due to the big investments in the region. Its industry is developing quickly, and it has close connection with Europe which is of great use for the trade. It is a region abundant with natural resources as well. The climate is also a factor that is contributing to larger population density, because it is the part of Africa where the climate is most suitable for living, warm for most of the year, and has sufficient amount of precipitation as well.