Construction of a building has stopped due to a supplier ' s failure to deliver...

According to the PMBOK® Guide, specifically within the Monitor Risks and Implement Risk Responses processes, a project manager must act decisively when a known or unknown risk materializes into an issue.

Why Choice A is correct:

Risk Response Implementation: A professional project manager should have identified " supplier failure " as a potential risk during the planning phase. The Risk Register would contain a pre-approved Risk Response Plan (e.g., a secondary supplier, expedited shipping, or technical alternatives).

Resource Allocation: To address a three-month delay, the PM may need to utilize contingency reserves or reallocate human and material resources to perform " crashing " or " fast-tracking " once the concrete arrives to compress the schedule.

Structured Approach: Following the plan ensures that the response is calculated and authorized, rather than reactive or emotional.

Analysis of other options:

B (Consult legal/SMEs to avoid failure): While legal advice might be necessary for contract breaches, the primary goal of the PM is to " put the project back on track. " Legal action is a recovery of damages, not a schedule recovery technique. Furthermore, " avoiding failure " is proactive; the failure has already occurred, so the PM must now move to mitigation or corrective action.

C (Extend delivery and use management reserve): Management reserves are typically for " unknown-unknowns " and require senior management approval. Simply extending the deadline is a passive move that doesn ' t " overcome " the problem or put the project " back on track " —it simply moves the goalposts.

D (Accept penalties): This is a " passive acceptance " strategy. In a high-impact scenario like a three-month construction delay, passive acceptance is rarely acceptable to stakeholders. The PM is expected to explore all possible corrective actions before resigning to penalties.

Key Concept: The Project Management Institute (PMI) emphasizes that the Risk Register is a living document. When an issue occurs, the PM evaluates the effectiveness of the planned response. If the original plan is insufficient, the PM should issue a Change Request to implement more aggressive recovery measures, ensuring the project aligns as closely as possible with the original Schedule Baseline.