Implementing role-based access control effectively ties access privileges to the roles within the company rather than to individual users. This ensures that users are granted access based on their job requirements, which is the core idea of the principle of least privilege. Enforcing password complexity, while important for security, doesn’t limit access based on roles but rather secures authentication mechanisms. Conducting security risk assessments helps identify risks but does not inherently limit access privileges to users. Lastly, employing multifactor authentication adds an additional layer of security at the point of user authentication but does not manage the specific levels of access once authenticated.