Concept:Desert landforms are divided into erosional and depositional features.
Yardang is an erosional landform.
Explanation:Wind erosion in deserts produces distinct landforms.
Yardang is a sharp, irregular ridge of compact sand aligned with the prevailing wind.
It forms when softer material around it is eroded away, leaving the harder ridge behind.
Barchan, loess, and self dunes are all depositional landforms created by wind deposition.
Therefore, only yardang qualifies as a desert erosional landform.
Answer:A. Yardang