Final answer:
The 'Aw' Köppen climate type corresponds to tropical savanna vegetation, characterized by grasslands with periodic rainfall and a distinct dry season.
Step-by-step explanation:
The letter that approximates the type of vegetation you would see for an Aw climate is tropical savanna. The Aw climate falls under the Köppen climate classification and is characterized by a dry season and a wet season, typically found near the equator.
Vegetation in the Aw climate zone includes grasses with scattered trees and shrubs, which are adapted to cope with both the heavy rainfall during the wet season and the drought conditions in the dry season. This type of climate supports expansive grasslands, with areas of woodland or thicket, and it is broadly known as the savanna or tropical grassland.