The correct option is Project initiation phase. The Project initiation phase is where a new solution is first defined and classified at a high level before detailed requirements and design work begin.

During the Project initiation phase stakeholders establish the business need objectives scope and basic classification such as priority and sensitivity. This phase produces the project charter business case and initial risk assessment which set the direction and classification for later phases.

Requirements analysis is incorrect because this phase refines and documents detailed functional and non functional requirements after the solution concept has already been defined during initiation.

Implementation phase is incorrect because this phase focuses on building and coding the solution rather than on initially defining or classifying it.

Operations phase is incorrect because operations covers deployment monitoring and maintenance after the solution is live and does not involve the original definition or classification of the solution.

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