The correct answer is: a) Tropical Evergreen.
Tropical evergreen forests are the most extensive forest type in Kerala. They are found in the Western Ghats and the Nilgiris. These forests are characterized by their dense canopy of trees that are evergreen, meaning they keep their leaves all year round. The trees in these forests are tall and have broad leaves. The understory of these forests is also dense, with a variety of plants and animals.
Tropical deciduous forests are found in the eastern parts of Kerala. These forests are characterized by their deciduous trees, which lose their leaves during the dry season. The trees in these forests are not as tall as the trees in tropical evergreen forests, and the understory is not as dense.
Mangrove forests are found along the coast of Kerala. These forests are characterized by their salt-tolerant trees and shrubs. The trees in these forests have special adaptations that allow them to survive in the salty environment.
Shola forests are found in the high mountains of Kerala. These forests are characterized by their stunted trees and shrubs. The trees in these forests are adapted to the cold climate and the thin soil.
Here is a table that summarizes the characteristics of each forest type:
| Forest type | Location | Characteristics |
|—|—|—|
| Tropical evergreen forest | Western Ghats and Nilgiris | Dense canopy of evergreen trees |
| Tropical deciduous forest | Eastern parts of Kerala | Deciduous trees |
| Mangrove forest | Coast of Kerala | Salt-tolerant trees and shrubs |
| Shola forest | High mountains of Kerala | Stunted trees and shrubs |