Explanation/Reference:
Explanation:
Answer option B is correct.
Management is asking Sam to use the judgmental methods to predict how the project will finish on time and cost.
The judgmental forecasting method incorporates intuitive judgments, opinions and subjective probability estimates. Some examples of judgmental forecasting are as follows:
Composite forecasts

Surveys

Delphi method

Scenario building

Technology forecasting

Forecast by analogy

Answer option A is incorrect. Time series methods of forecasting use earned value management, moving average, extrapolation, linear prediction, trend estimation, and growth curve.
Answer option D is incorrect. The earned value management method is actually a part of the time series forecasting method.
Answer option C is incorrect. The causal/econometric methods use linear and non-linear regression, autoregressive moving average, and econometrics.
Reference: "Project Management Body of Knowledge (PMBOK Guide), Fourth Edition" Chapter: Procurement and Project Integration Objective: Forecasting and Integrated Change Control