A type of landscape that forms because of the dissolution of the underlying bedrock is called:mountainousfluvialkarststream/valley

The type of landscape that forms because of the dissolution of the underlying bedrock is called karst.

Karst topography arises mainly in areas with soluble rocks such as limestone, gypsum, or salt. The process of dissolution occurs when these rocks come into contact with slightly acidic water, often resulting from the natural carbon dioxide in the atmosphere and soil. This leads to the formation of unique geological features including sinkholes, caves, and underground rivers. The dissolving action can create intricate systems of voids and passageways that can vary significantly in size and form.

Karst landscapes are important both ecologically and hydrologically, as they can influence water drainage systems and provide unique habitats for various species. In summary, karst is defined by its origin related to rock dissolution, and it stands distinct from other terms such as mountainous, fluvial, or stream/valley, which refer to different types of geographic or hydrological features.