What type of vegetation dominates the savanna biome?A) coniferous trees B) tall, fast growing grass as well as scattered shrubs and trees C)...

The answer is B) tall, fast growing grass as well as
scattered shrubs and trees. 

See the following link for a
description of the world's different biomes.  Each biome is described in terms of its
climate as well as the plants and animals that are common to it.  There is also a world
map showing the various biome locations.