Final answer:
An insurer needs a License from the Nevada Department of Insurance to conduct insurance business in Nevada, in line with state-level regulations coordinated by the NAIC.
Step-by-step explanation:
To conduct insurance business in Nevada, an insurer must have a License from the Nevada Department of Insurance. This ensures that the insurer is authorized to operate within the state and adheres to standards set by state regulators. Licensing is crucial because the U.S. insurance industry is regulated at the state level, with each state maintaining its own set of regulations to promote fair prices and widespread access to insurance. The National Association of Insurance Commissioners aids in coordinating these efforts by sharing information and strategies among the state regulators. Thus, the correct answer to the question is B) License from the Nevada Department of Insurance.