Specific agriculture practices used to slow down the water run-off include

Correct option is D

Water run-off can cause erosion and loss of nutrients. The following methods help reduce it:
• Contour tillage reduces the speed of surface runoff by aligning farming operations along the natural contours.
• Strip cropping breaks the water flow with alternating crop types.
• Terracing creates level platforms that retain water and slow flow.
Together, they effectively reduce erosion and enhance water infiltration, making (d) the correct answer.