ACMP stresses thatmeasurement must be credibleto stakeholders. This credibility comes whenimpacted business unitsare directly involved in tracking and validating results. Including them ensures data reflects real adoption, usage, and performance outcomes rather than only top-down metrics. While sponsors (D) provide authority, credibility rests onoperational evidence. Risk stakeholders (C) or charismatic leaders (A) may influence perceptions but not measurement accuracy. Thus, someone from theimpacted business unit provides the necessary trust and operational validation of results.
(Reference: ACMP Standard, Process Group 5 - Close; Evaluate outcomes against objectives; Engage impacted groups in benefits validation.)

ACMP distinguishes betweenhuman, financial, and physical resources. Physical resources include tangible assets such asfacilities, workspaces, equipment, technology, and toolsnecessary to support the change.
They are not people (B), staff (C), or costs (D) but the material infrastructure required. Identifying these ensures that adoption is not hindered by inadequate tools or environments. Thus, option A correctly defines physical resources in the context of the resource plan.
(Reference: ACMP Standard, Process Group 3 - Resource Plan; Categories: Human, financial, and physical resources.)

A communications plan must includeclear stakeholder messagingtailored to different groups. ACMP emphasizes that during momentum phases, reinforcingwhat stakeholders need to know, feel, and dois critical. Feedback channels (B) and case studies (D) support engagement but are not the core requirement.
Sponsors (A) are senders, not the message itself. Clear, relevant messaging ensures stakeholders remain aligned and supported.
(Reference: ACMP Standard, Process Group 3 - Communication Plan; Key component: Targeted stakeholder messaging.)

Sustaining positive outcomes requires capturing and applying lessons learned. ACMP defines thelessons learned evaluationas a closure activity that not only reflects on performance but also shares insights for sustaining gains and improving future initiatives. Revising objectives (B), vision (C), or communication methods (D) may help but do not institutionalize learning. Option A ensures sustainability through reflection and sharing of best practices.
(Reference: ACMP Standard, Process Group 5 - Close; Activity: Conduct lessons learned to sustain improvements and build organizational capability.)

ACMP emphasizes thecriticality of sponsorship. If leadership is absent or unclear about their responsibilities, the change manager must create or refine asponsorship plan. This plan specifies sponsor roles, required visible behaviors, engagement activities, and alignment with stakeholders. Communications and resource plans address supporting activities, but they cannot substitute for active leadership. Without a sponsorship plan, resistance increases, employees lack direction, and adoption falters. Therefore, the most direct remedy to leadership absence is option D.
(Reference: ACMP Standard, Process Group 2 - Sponsorship Strategy and Plan; Activities: Define sponsor role, create plan for engagement and visibility, coach leaders.)