What is NOT a requirement for a surplus lines broker regarding due diligence for an exempt commercial purchaser?

In the context of surplus lines brokers and their obligations, option D is correctly identified as not a requirement regarding due diligence for an exempt commercial purchaser. Surplus lines brokers are tasked with fulfilling certain responsibilities to ensure that their clients are provided with appropriate options in the insurance marketplace, particularly when the coverage is being sought from nonadmitted insurers.

The obligation to guarantee superior coverage from nonadmitted insurers is not part of the broker's requirements. This is because the nature of surplus lines insurance inherently carries a different risk profile compared to that of admitted insurers. Therefore, a surplus lines broker cannot promise or guarantee that the coverage will be superior; instead, they focus on obtaining coverage that meets the purchaser's specific needs, given the constraints of the market.

In contrast, brokers are required to seek available coverage from admitted insurers and inform clients about the possible unavailability of coverage from the admitted market. This demonstrates the broker’s duty to conduct due diligence effectively and transparently, ensuring that the client is fully informed of their options before proceeding with nonadmitted insurers. Additionally, obtaining a written request from the purchaser is also a necessary step to ensure that the customer explicitly acknowledges their understanding and acceptance of using a surplus lines approach for their coverage needs.