Final answer:
Credentialed vet techs work under the direct supervision of a licensed veterinarian. It's the veterinarian who has the authority to oversee medical procedures, ensuring the well-being of the animals treated.
Step-by-step explanation:
Credentialed veterinary technicians are allowed to perform certain duties under the direct supervision of a licensed veterinarian. While other individuals in a veterinary practice such as the office manager, lead vet tech, and practice owner may have roles in managing or overseeing the practice, it is only a licensed veterinarian who has the authority to supervise medical procedures carried out by veterinary technicians. This ensures that all medical acts are performed under the guidance of a professional who has met the necessary educational and professional requirements to ensure the health and safety of the animals in care.