Final answer:
The traditional method of implementing access control is Discretionary Access Control (DAC), where resource access is restricted based on user identity and group membership, typically under the discretion of the resource owner. Option C is correct.
Step-by-step explanation:
The traditional method of implementing access control is Discretionary Access Control (DAC). This method grants or restricts access based on the identity of the users and/or the group membership. In the DAC model, the owner of the resource (for example, a file or directory) determines who is allowed to access it and what privileges they have. It's much like the owner of a document deciding who can edit it and who can only view it.
Other methods mentioned in the options are MAC (Mandatory Access Control), which controls access based on regulated, non-discretionary rules often used in environments that require a high level of security; RAC (Role-Based Access Control or RBAC), where accesses are based on roles within an organization; and RAC (Risk-Adaptive Access Control), which dynamically adjusts users' access rights based on the current risk context.
So, the correct answer is C) DAC.