The bare ground between plants is covered with a layer of organic matter in order to retain soil moisture. This method is called__________.

Correct option is A

The method of covering the bare ground between plants with a layer of organic matter in order to retain soil moisture, suppress weed growth, and regulate soil temperature is called " Mulching".
 Rock dam is a barrier constructed using rocks to slow down and prevent soil erosion caused by water.
 Shelter belts are rows of trees or shrubs planted to protect crops from wind damage.
 Contour barriers are constructed across slopes to slow down or prevent soil erosion.