Which one of the following is not matched correctly?
Land Form - Forming Agent

Question

Accepted Answer

Option 4 is not matched correctly because Roche moutonnee are landforms created by **glacial erosion**, not by Aeolian (wind) processes. Roche moutonnee are formed when a glacier passes over a bedrock outcrop. The upstream side of the rock is smoothed and gently sloping due to abrasion, while the downstream side is steeper and more jagged due to plucking (freeze-thaw action). Aeolian processes, on the other hand, create features like dunes, loess deposits, and yardangs through wind erosion and deposition.

Here's why the other options *are* correctly matched:

*   **Option 1: Blind Valley - Karst (Underground water):** Blind valleys are indeed associated with karst topography. They are valleys that end abruptly when a surface stream disappears underground into a sinkhole or swallow hole, characteristic of karst landscapes where soluble rock (like limestone) is dissolved by underground water.

*   **Option 2: Pediment - Fluvial-desert:** Pediments are gently sloping, eroded bedrock surfaces found at the base of mountains in arid and semi-arid regions. They are formed by a combination of fluvial (river) and weathering processes, particularly sheet flooding and lateral erosion in desert environments.

*   **Option 3: Basket of egg topography - Glacier:** Basket of egg topography, also known as drumlin fields, is a landscape characterized by numerous drumlins, which are elongated, oval-shaped hills formed by glacial deposition. The overall appearance resembles a basket filled with eggs.