Choice "D" is correct. A senior executive of an international organization who wishes to demonstrate the importance of the security of company information to all team members should visibly participate in a global information security campaign. It is the role of project sponsors at the executive level of management to participate in high-level planning and leading the development of projects, such as information security.Choice "c" is incorrect. Additional external audit services may detect weaknesses in the security of company information, but it will not be as effective in demonstrating the importance of the issue to all team members as the participation of senior management in a global information security campaign.Choice "b" is incorrect. Acceptance of risk assessments at staff meetings may document the process of evaluating weaknesses in the security of company information, but it will not be as effective in demonstrating the importance of the issue to all team members as the participation of senior management in a global information security campaign.Choice "a" is incorrect. Referencing the organization's human resources policies on privacy in a company newsletter may notify employees of policies related to the security of company information, but it will not be as effective in demonstrating the importance of the issue to all team members as the participation of senior management in a global information security campaign.