One source of groundwater pollution is pesticide runoff from crop fields. how could artificial selection be used to address this problem? a. farmers select plants that are most resistant to pests, which reduces the need for pesticides. b. farmers select plants that are least resistant to pests, which increases the need for pesticides. c. the environment selects plants that are most resistant to pests, which reduces the need for pesticides. d. the environment selects plants that are least resistant to pests, which increases the need for pesticides.