Final Answer:
The level of access control described, based on the security classification of data and need-to-know information, is B. Mandatory Access Control.
Step-by-step explanation:
Mandatory Access Control (MAC) is a security model where access to resources is determined by the security classification assigned to both the user and the resource. In this scenario, the security administrator implements access controls based on the sensitivity or classification of the data and the principle of "need to know." MAC ensures that users can only access information that is appropriate for their security clearance and job responsibilities.
Unlike other access control models, such as Role-Based Access Control (RBAC) or Least Privilege, which focus on roles or minimal necessary permissions, MAC is driven by a centralized security policy that dictates access based on labels or classifications. The security administrator sets and enforces rules that specify which subjects (users or processes) are allowed to access specific objects (data or resources) based on their security clearances.
This approach provides a high level of granularity and control over access permissions, making it suitable for environments where strict control over sensitive information is crucial. Therefore, the most fitting description for access control based on security classification and need-to-know information is Mandatory Access Control (B).