What is the primary reason for applicators to use the buddy system when applying highly toxic pesticides?

The primary reason for applicators to use the buddy system when applying highly toxic pesticides is to assist in case of accidental exposure. This system ensures that there is always someone present to provide immediate help in the event of an emergency, such as a spill, inhalation of fumes, or skin contact with these hazardous chemicals. Quick response is crucial to minimize health risks associated with pesticide exposure, and having another person nearby can significantly enhance safety measures.

While other options may have their own purposes, such as providing assistance with mixing or cleaning equipment, their primary function does not focus directly on emergency response. The buddy system's essential aim is oriented towards safeguarding both the applicator and anyone nearby by enabling prompt action in emergencies. Therefore, having a companion during the application of highly toxic substances is a vital safety protocol in pesticide usage.