During requirements and scope definition, debate is normal, but uncontrolled discussion can derail planning and delay key baseline activities. The project manager should timebox the debate (A) to keep progress moving while still allowing meaningful discussion. Timeboxing is a facilitation technique that sets a fixed amount of time to explore an issue, then forces a decision, an escalation, or a clear next step (e.g., parking lot item, follow-up workshop, decision owner assignment). This protects schedule objectives and ensures scope definition completes on time, which is essential for downstream planning (WBS, schedule, cost). Simply reviewing expectations (B) or discussing delays (C) may help but does not create a practical control to stop overruns. Documenting points for later (D) can be part of timeboxing, but on its own it risks deferring critical scope decisions and increasing ambiguity. Timeboxing balances thoroughness with delivery discipline, keeps the team aligned, and maintains momentum without sacrificing the ability to resolve complex scope questions in a structured way.

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