An HR cost report was accidentally shared with the entire project team, causing conflict over salary differences. What should the project manager have done to prevent this?

The correct answer is to validate the information and confirm the appropriate recipients according to the communications management plan. This proactive step ensures that sensitive information, like an HR cost report, is only distributed to authorized individuals, preventing accidental disclosures and potential conflicts. The communications management plan defines who receives what information, when, and how. The project manager's responsibility includes adhering to and enforcing this plan. Excluding sensitive reports from the communications management plan is incorrect because all project communications, including sensitive ones, should be planned and managed. Including noncompliance penalties is a reactive measure and doesn't prevent the initial error. Simply specifying recipients in the plan is insufficient; the project manager must actively validate and confirm adherence to those specifications before distribution.