Which of the following best describes the term 'restricted-use pesticide'?

The term 'restricted-use pesticide' specifically refers to products that require special certification for application due to their potential hazards to human health or the environment. These pesticides are classified this way because they pose a higher risk compared to general use pesticides. Consequently, only individuals who have received proper training and certification are permitted to apply these chemicals, ensuring that they are used safely and effectively according to legal and environmental standards.

This regulation is critical for protecting both applicators and the public from possible adverse effects associated with misuse or overexposure to these particular pesticides. The other options outline scenarios that do not align with the definition of restricted-use pesticides, such as allowing untrained individuals to use them or having minimal regulation and licensing requirements, which contradicts the controlled nature of their application.