Which activity is part of the ‘define the problem’ step of the forecasting process?

While ensuring the accuracy of the initial model is crucial in the forecasting process, it falls under later steps such as model development and validation. This activity does not directly relate to defining the problem itself, which is more about understanding the goals and context of the forecast rather than the model's performance.

Reducing model dependence to a single variable may be a strategy employed during the modeling phase to simplify analysis, but it does not pertain to the defining phase. The 'define the problem' step is focused on clearly identifying the forecast needs rather than limiting the complexity of the model.

Assessing regulatory limitations is a critical consideration in many forecasting scenarios, but it is more about understanding constraints rather than defining the core problem or desired outcomes. This activity would typically occur after the problem has been defined to ensure that forecasts comply with existing regulations.