What action must the assignee take regarding new owners prior to performing regulated services?

The correct action required of the assignee before performing regulated services is to ensure that new owners are approved by the department. In the context of regulated services, it is crucial to maintain compliance with the standards set by the Texas Department of Public Safety's Private Security Bureau. This approval process safeguards the integrity of the security services by verifying that all individuals in ownership positions meet the necessary qualifications and standards set forth by the regulatory body.

This requirement not only ensures the professionalism and reliability of the service being provided but also protects clients and the public by ensuring that only qualified individuals are involved in the ownership of regulated entities. Approval from the department signifies that a thorough vetting process has taken place, confirming that new owners adhere to legal and ethical expectations in the private security industry.

The other options involve steps that may be necessary during certain operational changes, but they do not address the specific need for obtaining prior approval for ownership changes, which is a critical regulatory requirement.