Who is primarily responsible for ensuring physical security in an organization?

The option indicating that all employees collectively are responsible for ensuring physical security in an organization recognizes that physical security is a shared responsibility. While specific roles may focus on particular aspects, the involvement of every employee is crucial. Employees are often the first line of defense against physical security threats. They should be aware of security policies, identify suspicious activities, and understand how to report issues.

Moreover, fostering a culture of security awareness among all employees helps reinforce protocols and creates a more secure environment overall. Everyone has a part to play, from adhering to access control measures to being vigilant about unusual behavior, which significantly contributes to the organization’s physical security posture.

Other options, such as relying solely on external consultants, the Human Resources department, or just the IT department, do not capture the collective effort required for effective physical security. Each of these roles may contribute to specific aspects of physical security, but without the engagement and active participation of all employees, the organization's security efforts can be significantly weakened.