context: The southwest of the country is a coastal plain for which the primary drainage is the Kouilou-Niari River; the interior of the country consists of a central plateau between two basins to the south and north. Forests are under increasing exploitation pressure.
question: కాంగో నైరుతి భాగంలో ఏ రకమైన భూభాగం ఉంది?
answers: coastal plain