CAPM Practice: Explain when it is appropriate to use a predictive, plan-based approach

When a significant assumption proves false, the project manager must assess the full impact on all project constraints (schedule, cost, scope, quality, risk) before deciding on action. This impact assessment informs the change request submitted through integrated change control, which the sponsor and CCB will evaluate. Unilaterally switching methodology or continuing unchanged would bypass proper governance.

**Why not B:** Immediately switching to an adaptive approach is a drastic, unilateral methodology change that bypasses proper governance. The technology delay is a specific issue that can be assessed and addressed within the existing framework through change control.

**Why not C:** Notifying the sponsor and waiting for instructions is too passive. The project manager's role is to assess the impact and propose options, not simply report problems and wait. The PM should bring the analysis and recommendations when escalating to the sponsor.

**Why not D:** Continuing unchanged ignores a known problem that will inevitably affect the project. A 6-month technology delay cannot be addressed later — the impact must be assessed now so corrective action can be planned before the delay cascades into larger problems.