Which of the following penalties is defined by FIFRA for knowingly violating the law?

The correct answer is criminal penalties. Under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), individuals or entities that knowingly violate the regulations can face serious criminal consequences. This includes sustained fines and potential imprisonment, depending on the severity of the violation and the circumstances surrounding it. The law is established to deter intentional misconduct in the application and use of pesticides, ensuring that public health and environmental safety are protected.

Other form of penalties, like civil penalties, typically involve monetary fines imposed for violations, but they are generally not as severe as criminal penalties and do not carry the possibility of jail time. Written reprimands may be issued as a form of internal discipline for minor infractions and are not a legal penalty defined under FIFRA. Community service is not a legal consequence outlined in FIFRA for pesticide regulation violations. Therefore, criminal penalties are specifically defined in the context of FIFRA for serious, willful violations of pesticide laws.