Which of the following actions is likely to fall under the Illinois Pesticide Act?

Licensing pest control operators is a key action that falls directly under the Illinois Pesticide Act. This Act is designed to regulate various aspects of pesticide use and application to ensure safety for public health and the environment. Licensing pest control operators is essential because it establishes that those applying pesticides are trained and knowledgeable about safe handling, application techniques, and regulations governing pesticide use. This licensing process helps ensure that only qualified individuals are permitted to use pesticides, thereby reducing the risk of misuse or harm.

In contrast, field testing of pesticides is typically conducted under specific experimental circumstances and may have its own regulatory framework. Marketing agricultural products and regulating organic produce sales deal more with broader agricultural policies and marketing regulations rather than the specific regulatory measures outlined in the Pesticide Act. Thus, while all these activities are important within the agriculture and pest management landscape, licensing pest control operators is the action most directly governed by the Illinois Pesticide Act.