Question

what do we call the tillage (plowing) practice that follows the curve and layout of the landscape to avoid erosion?
contour tillage
alley cropping

Explanation:

Contour tillage is the tillage practice that follows the contour (curve and layout) of the landscape to reduce soil erosion. Alley cropping involves growing crops between rows of trees or shrubs, which is not related to following the landscape's contour for erosion control.

Answer:

A. contour tillage