What is the Assumption Log used for?

• A. To track resource allocations.
• B. To document and track assumptions and constraints identified during planning for ongoing validation and risk management.
• C. To summarize lessons learned.
• D. To record stakeholder communications.

Answer: (C)

The Assumption Log is a living record that captures assumptions and constraints identified during planning so they can be tracked, validated, and managed throughout the project. Assumptions are things you believe to be true for planning purposes, while constraints are the limits that shape how you can execute the project. By documenting these early on, the team can monitor whether the assumptions hold as reality unfolds, revisit them when new information emerges, and use them to inform risk management and decision-making. If an assumption proves invalid or a constraint changes, you adjust plans and respond to risks accordingly. This log isn’t for tracking resource allocations, summarizing lessons learned, or recording stakeholder communications—those tasks belong to other areas (resource management, lessons learned, and communications, respectively).