A __________ or __________ may not enact an order, ordinance, or rule requiring a fire protection sprinkler system contractor to obtain a registration certificate from the municipality or county.

• A. The city council
• B. The state legislature
• C. Municipality or county
• D. A private industry group

Answer: (C)

The key idea is about who has the legal authority to create binding rules for professional licensing and registration. Only government bodies with regulatory power—such as a city council or a state legislature—can enact ordinances or rules that require contractors to hold certain registrations. Private industry groups lack enforcement power to impose such mandates. In this context, the statement says that a municipality or county cannot, on its own, create an order requiring a sprinkler system contractor to obtain a registration certificate from that same locality, because the authority to establish and enforce registration frameworks is typically derived from state law or a state licensing framework and may be exercised by a higher-level government or a specific licensing board. The city's council or the state legislature, by contrast, can enact such requirements, while a private industry group cannot.