Normally the requirements documented in the __________ ________ document will formulate the scope of SCA testing. Response:

The Security Plan document comprehensively details the security controls selected, implemented, and planned for an information system, based on the system's categorization and risk assessment. These documented controls and their associated requirements in the Security Plan serve as the foundational baseline against which the Security Control Assessment (SCA) testing is performed, thereby formulating the scope of what needs to be assessed.

A Contingency Plan outlines procedures for incident response and recovery, but it does not primarily define the scope of security control assessments.

An Assessment Plan describes how an assessment will be conducted (methodology, schedule, resources), not what security requirements are being assessed.

A Remediation Plan details actions to fix identified vulnerabilities, which comes after an assessment, not before to define its scope.