The correct options are
A The Eastern Highlands
B The Coastal Plains
C The Andes Mountains
D The Central Lowlands
The continent of South America is divided into four main physical divisions: The Andes Mountains along the Pacific coast; the Eastern Highlands comprising the Guiana Highlands, the Brazilian Highlands, and the Patagonian Plateau; the Central Lowlands lying between the Andes and the Eastern Highlands; and the Coastal Plains along the Pacific Ocean.