Restricted materials and restricted use pesticides can only be used by or under the supervision of which type of individual?

The correct response emphasizes that restricted materials and restricted use pesticides can only be utilized by or under the supervision of a certified commercial or private applicator. These individuals have completed the necessary training and have obtained certification. This training covers the safe and effective use of these materials, ensuring they understand the associated risks, application methods, and state regulations governing pesticide use.

The certification process is designed to equip them with the knowledge required to handle these potentially hazardous substances responsibly, minimizing the risk to human health and the environment. Therefore, their supervision or direct application is vital for compliance with legal standards and safety protocols.

Other options like a licensed agricultural technician, pest control business owner, or pesticide broker may have roles related to pest control or pesticide distribution; however, they do not specifically possess the certification required to handle restricted materials directly. Their training and licensing may not encompass the comprehensive knowledge necessary for the application of such sensitive materials. Hence, they cannot oversee the use of restricted pesticides without the involvement of a certified applicator.