Chief information officer is the correct option.

Chief information officer normally provides executive oversight, governance, and high level policy for information security rather than performing hands on assessment work. Preparing a security controls assessment plan is an operational and technical activity that requires detailed knowledge of controls, system implementation, and assessment procedures so the plan is typically created by assessors and control owners rather than by the CIO.

Security control assessor is incorrect because assessors are the professionals who plan and execute security control assessments and who develop assessment plans and procedures based on control baselines and system specifics.

Common control provider is incorrect because common control providers supply and maintain controls that affect multiple systems and they must provide documentation and input for the assessment plan for those shared controls.

Authorizing official is incorrect because the authorizing official approves the authorization package and accepts or rejects risk and they participate in defining the assessment scope and approving the assessment plan even though they do not usually draft the technical procedures.

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