What are possible consequences of pesticide drift onto pastureland or drinking water?

The correct choice highlights the significant impact pesticide drift can have on livestock. When pesticides drift onto pastureland, there is a potential risk of exposure for animals that graze on treated areas. This exposure can lead to adverse health effects in livestock, including toxicity, reproductive issues, and overall decline in animal wellbeing. The safety and health of livestock are critical not only for animal welfare but also for agricultural economics, as unhealthy animals can lead to reduced productivity and economic losses for farmers.

Other outcomes are less directly related to the negative impacts of pesticide drift. Increased crop production or improved water supply are unlikely consequences of pesticide drift. In fact, when pesticides contaminate these areas, they can harm both crops and water quality instead. The idea that farmers would benefit financially from pesticide drift is also misplaced, as damage to livestock and potential regulatory repercussions generally lead to financial losses rather than gains.