The chemical and physical actions of groundwater form

karst topography

glacial topography

volcanic topography

mountain topography

The chemical and physical actions of groundwater form Karst topography. It is any region where the terrain has been dissolved by the physical and chemical weathering of the bedrock. 
There is no reason why glaciers, volcanoes, and mountains should be formed as a result of these actions. 

Did you ever figue this

The correct answer is  "c".  it is "c" because melting is an endothermic change, and endothermic get's energy from surroundings.