Continual improvement is the process of increasing an organization’s effectiveness and efficiency so that it better fulfills its policies and objectives. In information security, improvement is not limited to fixing one defect. It is the ongoing refinement of controls, processes, responsibilities, technologies, awareness, monitoring, and response capabilities. Option B describes analysis, which may support improvement but is not the definition. Option C describes correction or corrective action for a nonconformity, which can be one mechanism of improvement but does not cover the complete concept. ISO/IEC 27002 supports continual improvement through controls such as learning from information security incidents, independent review, compliance monitoring, threat intelligence, vulnerability management, change management, and documented operating procedures. A mature organization uses evidence from incidents, audits, metrics, user behavior, supplier performance, new threats, and business changes to adjust its controls. The key idea is progressive enhancement of suitability, adequacy, and effectiveness. Therefore, option A aligns with the management system and ISO/IEC 27002 control logic. References/Chapters: ISO/IEC 27002:2022, Control 5.27 Learning from information security incidents; Control 5.35 Independent review of information security; Control 8.8 Management of technical vulnerabilities.

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