A team has developed and tested new flight-control software for airplanes and must meet several regulatory requirements. What should the project manager do to ensure compliance?

The correct answer is to validate that the software complies with the applicable standards and regulations. Validation is the process of ensuring that the product, service, or result meets the needs of the stakeholders and the intended use. In this case, it directly addresses the requirement to meet regulatory compliance by confirming the software adheres to the necessary standards. Asking HR for a compliance specialist might be a good step, but it doesn't ensure compliance; it only provides a resource. Determining potential threats is part of risk management, which is important, but it's a proactive step, not the final assurance of compliance. Measuring the degree of compliance is part of quality control, but validation is the ultimate step that confirms the product meets the regulatory requirements for its intended use.