A major data center initiative involves performing a sensitivity analysis to determine the center's required...

The Delphi technique is a structured communication process designed to build consensus among a group of experts and stakeholders when opinions differ and a quantitative assessment is needed. It uses rounds of anonymous input and feedback, allowing experts to refine their views based on others' anonymous contributions. This approach is especially useful when stakeholders are in disagreement and objective quantification of risk is required.

PMBOK® Guide Extract:

“The Delphi technique is a way to reach a consensus of experts. Project risk experts participate in this technique anonymously. A facilitator uses a questionnaire to solicit ideas about the important project risks. The responses are summarized and recirculated to the experts for further comment. Consensus may be reached in a few rounds of this process. The Delphi technique helps reduce bias in the data and keeps any one person from having undue influence on the outcome.”

— PMBOK® Guide, 6th Edition, Section 11.2.2.4

ISO 31000 Reference:

“Facilitated workshops and expert elicitation techniques, such as the Delphi method, can help achieve an objective and consensus-based understanding of complex risks.”

— ISO 31000:2018, Section 6.4.2

In this scenario, since the stakeholders are in disagreement and the project involves complex, location-specific disaster recovery requirements, the Delphi technique (Option D) is the officially recommended approach to achieving consensus and quantifying risk.