Final answer:
In EMS, a physician can serve as an offline medical director for up to ten EMS providers. So, the correct option is c. Ten.
Step-by-step explanation:
The maximum number of EMS providers for which a physician can serve as an offline medical director per 197.3 is c. Ten. In accordance with Section 197.3, the maximum number of EMS providers for which a physician can serve as an offline medical director is limited to ten. This regulation is crucial for maintaining effective oversight and ensuring the quality and safety of emergency medical services. The restriction acknowledges the need for physicians serving in such roles to dedicate sufficient time and attention to each EMS provider under their supervision. This limit aims to strike a balance between the demands on a medical director's expertise and the ability to provide comprehensive and focused oversight, ultimately contributing to the delivery of high-quality emergency medical care within the specified jurisdiction.