Question

what do we call it when trees and shrubs are planted in a line designed to enhance crop production by protecting the soil, people, and livestock from effects of the wind?
wind breaks
contour tillage

Explanation:

To determine the correct term, we analyze the definitions: Wind breaks are rows of trees or shrubs planted to reduce wind impact (protect soil, people, livestock, and enhance crops). Contour tillage involves plowing along land contours, not related to wind protection via plants. So the correct term is Wind breaks.

Answer:

A. Wind breaks