Which is an aspect of the requirements management plan?

The detailed project scope statement is an output of the Define Scope process, not a component of the requirements management plan.

Creation of the Work Breakdown Structure is part of the Create WBS process and is guided by the scope management plan, not the requirements management plan.

Impact analysis is a key component of the requirements management plan because the plan describes how changes to requirements will be initiated, analyzed for their effect on cost, schedule, and scope, and traced throughout the project - ensuring that no requirement change is approved without understanding its downstream consequences.

Duration for implementation is a schedule management concern addressed in the schedule management plan, not a specific aspect of the requirements management plan.