Final answer:
An EMT's activities after initial certification are regulated by the National Registry of Emergency Medical Technicians (NREMT). The NREMT sets standards and certifies EMS providers in the US.
Step-by-step explanation:
An EMT's activities after initial certification are regulated by the National Registry of Emergency Medical Technicians (NREMT).
The NREMT is a non-profit organization that sets standards for and certifies emergency medical service (EMS) providers in the United States.
They establish guidelines for the continuing education and recertification of EMTs to ensure that they maintain the necessary skills and knowledge to provide quality care.