The correct option is Confirm that implemented controls are mitigating identified risks and operating as designed.

Periodic control testing is performed to verify that controls actually reduce the risks they were intended to address and that they function as planned. Testing uncovers failures, configuration drift, or gaps that could leave the organization exposed and it produces evidence for management and auditors to support remediation and risk decisions.

Keep security policies and related documentation up to date is important for governance and compliance but it describes maintenance of documentation rather than the primary goal of testing controls.

Security Command Center names a specific product or tool and not an objective. Selecting a tool can help monitoring and testing but the chief objective is to validate control effectiveness rather than to name a platform.

Assess the IT team’s speed and effectiveness in responding to security incidents relates to incident response exercises and post-incident metrics. That is a complementary activity but it is not the primary purpose of routine control testing which focuses on whether controls are in place and working to mitigate risks.

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