Which analysis method uses schedule simulation to analyze impacts?

The modeling method is indeed the correct answer because it involves the use of simulation techniques to assess and analyze the potential impacts of changes in the project schedule. Schedule simulation encompasses various methods, including Monte Carlo simulation, which allows planners and schedulers to model the uncertainties and variability in project activities. By simulating different scenarios, project managers can understand how delays or changes, such as resource allocations or task durations, may affect the overall project timeline. This approach provides a quantitative basis for decision-making and risk management, offering insights that help in making informed decisions to optimize project outcomes.

In contrast, the observational method relies on direct observation and assessments without formal modeling, the qualitative method focuses on subjective analysis and opinion-based evaluations, and the historical method looks back at past projects to glean lessons and insights, which does not use simulation or modeling for current project analysis.