Which of the following could lead to the suspension or revocation of a surplus lines licensee's license?

The choice indicating that closing the office for more than 30 days could lead to the suspension or revocation of a surplus lines licensee's license is based on the regulatory requirements set forth for maintaining an active license. Surplus lines licensees are expected to operate their business in a manner that ensures access to clients and continuity of service. Prolonged closure can be viewed as a failure to meet obligations to clients and regulators.

Maintaining an open office is often a condition of holding a license, as it directly impacts the ability to conduct business legally and ethically. Closing the office disrupts the provision of services and could hinder the licensee's ability to meet regulatory requirements, including communication with clients and fulfillment of policy obligations.

While the other choices may involve activities that require oversight or reporting, they typically do not carry the same immediate implications for a licensee's operational capacity as a prolonged office closure. Hence, the likelihood of license suspension or revocation is significantly higher in the case of option B.