The correct option is
A Earthen embankment down the slope
A khadin, also called a dhora, is an ingenious construction designed to harvest surface runoff water for agriculture. Its main feature is a very long (100-300 m) earthen embankment built across the lower hill slopes lying below gravelly uplands. The khadin system is based on the principle of harvesting rainwater on farmland and subsequent use of this water-saturated
land for crop production.Therefore, the correct answer is option A.