Question

what is the environmental risk of using pesticides with high soil mobility?
leaching into groundwater
increased plant absorption
reduced pest resistance
enhanced soil fertility

Explanation:

Pesticides with high soil mobility can move through soil pores. Leaching into groundwater is a major environmental risk as it contaminates water sources. Increased plant absorption is not a risk. Reduced pest resistance is related to pest evolution, not soil mobility. Enhanced soil fertility is not a risk.

Answer:

leaching into groundwater