The correct option is C Savannah
Part 1:
Grassland
Grasslands are dominated by grass which may form a continuous or discontinuous cover. Examples include Prairies etc.
Part 2:
Savannah
Savannah are mixed woodland-grassland ecosystems which are characterised by the presence of tall or short grasses. They support grasses interrupting which are present trees that do not form a canopy as in forests.
Part 3: Deciduous forest
Deciduous forests are dominated by trees having broadleaves which shed their leaves at the end of the growing season.
Pat 4: Evergreen forest
Evergreen forest is dominated by trees which do not shed their leaves altogether.
Part 5: Tropical rainforest
Tropical rain forests are located in the tropical regions and experience continuous rainfall throughout the year.
Final answer
(a) Savannah