Wind erosion is a process by which wind transports and removes soil or rock particles from one place to another. It is a common geological phenomenon that shapes the Earth`s surface.

Option 1: Wind gap. Wind gap is actually related to the erosive action of water, not wind. A wind gap refers to a water-eroded notch or valley that was created by the flow of water in a landscape before it was abandoned or diverted.

Option 2: Zeugen. Zeugen are actually related to wind erosion. They are long, ridge-like landforms that are formed by wind erosion. These landforms are typically composed of hard, resistant rock that have been sculpted into ridges by strong winds.

Option 3: Dreikanter. Dreikanter is also related to wind erosion. It is a type of glacial erratic that has been reshaped by wind action. Dreikanters are angular rocks with three sides that have been sculpted by wind erosion.

Option 4: Demoiselle. Demoiselle is not specifically related to wind erosion. It is a term used to refer to a type of bird, the demoiselle crane, and does not have a direct connection to wind erosion.

Therefore, the correct answer is option 1,