74. A series of stakeholder meetings were called to address the needs of stakeholders for the upcoming project. A list of 150 requirements was drawn up. After reviewing the list and developing a high level estimate, the PM reported back to the stakeholder group that due to the budget limitations on the project, it would be possible to deliver only 75 of these requirements. A new meeting was called to cull the list from 150 to 75. The stakeholders were going through the list, when there was serious contention about a group of requirements. The disagreement escalated to a shouting match, and several stakeholders left the meeting infuriated. What risk tool would have best prevented this situation?