Which of the following depositional landforms is characterized by a crescent-shaped sand dune with horns pointing downwind, typically forming in areas with unidirectional winds and limited sand supply?

💡 Solution & Explanation

Barchans are isolated crescent-shaped sand dunes characterized by tips pointing downwind, formed in environments featuring unidirectional winds and limited sand availability. Other options like star dunes and parabolic dunes form under entirely different wind regimes and vegetation covers. Transverse dunes form perpendicular to the prevailing wind direction when sand supply is abundant.