What is the purpose of formulants in pesticide formulations?

Formulants in pesticide formulations play an essential role in modifying and enhancing the properties of the active ingredient, making it suitable for storage, handling, and use. These formulants include various additives such as solvents, surfactants, and emulsifiers that facilitate the application of the pesticide by improving characteristics such as solubility, stability, and dispersion.

By adjusting these properties, formulants help to ensure that the active ingredient can be effectively applied in a practical manner, allowing it to work efficiently once applied in the field. This suitability for handling and application is critical for both the performance of the pesticide and the safety of the users and the environment.

While other choices may relate to aspects of pesticide use and regulation, the specific function of formulants is directly tied to enhancing the usability of the active component, making choice C the accurate answer.