Attestation in the context of security compliance involves an official acknowledgment that an organization adheres to certain standards or requirements. This can be provided internally, by managed self-assessments and compliance committees, or externally, through regulatory examinations and independent third-party audits. The correct answer emphasizes the verification of compliance to prescribed standards, which is a core purpose of attestation. Other options, while related to compliance, do not accurately describe the specific process and purpose of attestation itself; for example, due diligence is about performing a comprehensive appraisal prior to signing an agreement, and a Risk Assessment is important for identifying potential risks but does not involve the formal acknowledgment of compliance.