The correct answer is Altering cryptographic algorithms or replacing key management services.

Changing cryptographic algorithms or replacing key management services directly affects the system cryptographic architecture and key lifecycle which are core to confidentiality and integrity. Such changes can alter trust boundaries and the effectiveness of controls so they normally require a full reassessment and a new authorization review.

Replacing a key management service often requires key migration reissuing certificates and retesting cryptographic implementations against standards. Those activities can introduce compatibility issues and new vulnerabilities and they therefore change residual risk in ways that authorization authorities must evaluate.

Relocating office workstations to another company facility is typically an operational or environmental change that may require network or physical security adjustments but it does not inherently change cryptographic controls or the system design. Such moves are usually handled through configuration management and continuous monitoring unless the relocation changes the authorization boundary.

Applying routine software bug fixes and small security patches is standard maintenance covered by patch management and continuous monitoring processes. Minor patches normally do not change the security architecture or key management and they do not trigger a full reauthorization.

Adjusting access group assignments for a small number of employees changes user privileges but it does not alter cryptographic algorithms or key management. Access assignment changes are managed through identity and access management and audit controls and they rarely require a new authorization unless they represent a broad or structural change to roles or privileges.

Full AWS Practitioner Certification Question