What is the purpose of the EPA's reregistration program?

The purpose of the EPA's reregistration program is primarily to ensure that older pesticides continue to meet current health and safety standards. When first registered, pesticides were approved under a different set of regulations and scientific knowledge; therefore, the reregistration program evaluates these products against the latest scientific research, environmental impact assessments, and health data. This process ensures that any pesticide still in use is safe for humans and the environment, aligning with modern safety standards and regulations.

The other options don’t accurately represent the reregistration program's objective. While cost reduction, development of new pesticides, and elimination of all pesticide usage are relevant topics in the broader context of pesticide regulation, they do not capture the specific aim of reviewing and ensuring the continuing safety and efficacy of existing pesticide products.