Thepost-incident review processhelps an organization identify gaps in its response and security posture.
Assigning different departmental groups ensures that flaws inspecific work areas (such as IT, HR, or legal teams)are identified and addressed.
* Option Bis incorrect because not all staff need exposure; the review focuses on relevant stakeholders.
* Option Cis a part of the process, but the main goal is improvement, not just playbook verification.
* Option D(cross-training) is a benefit but not the main objective.
Thus,A is the best answerbecause it focuses on identifyingflaws in specific areas of incident management.