Final answer:
Deloitte should collaborate with stakeholders to develop a comprehensive change management strategy, involving both leaders in the various departments and employees to address skepticism and ensure buy-in.
Step-by-step explanation:
Deloitte can develop an impactful change management strategy to institutionalize the goals of the 10-year vision and ensure buy-in across the Agency's diverse workforce by collaborating with stakeholders to develop a comprehensive change management strategy.
By involving leaders in the various departments and seeking their input, Deloitte can address their skepticism and incorporate their unique operational considerations into the strategy.
Furthermore, involving employees and ensuring their awareness of the 10-year vision initiative will help generate buy-in and engagement.