What was "listing" in the Great Plains in the wake of the Dust Bowl?
1) A way to prevent the foreclosure of farms by gathering community resources to pay off mortgages.
2) A way to prevent the foreclosure of farms by keeping the list prices low.
3) A way to prevent further erosion by shaping loose dirt into ridges and furrows.
4) A way to prevent farmers from deserting their farms by listing the farmers in the newspaper.