The board of directors of a global organization has found an increased number of reported...

To assist the board in gaining a better understanding of the degree of ethics awareness within the organization, the most appropriate action would be to request the internal audit activity to perform an ethics-related assurance engagement. This type of engagement would directly assess the organization's ethical culture and practices, providing the board with a detailed and objective evaluation of ethics awareness and related issues throughout the organization.

IIA’s guidance on the role of internal auditing in organizational ethics.