What specific information must tabulated data include for sloping or benching systems?

The correct choice emphasizes that tabulated data for sloping or benching systems must include the identification of parameters affecting slope selection. This is crucial because the effectiveness and safety of sloping or benching systems depend on various physical and environmental factors, such as soil type, moisture content, and load considerations. Understanding these parameters allows operators to determine the appropriate slope angles and bench dimensions necessary to prevent collapses and ensure worker safety.

In contrast, merely having methods of excavation does not encompass the comprehensive knowledge needed to assess and implement sloping systems effectively. Training steps, while important for safety and competence, are not directly related to the specifications required in tabulated data. Lastly, a cost analysis would be useful for project budgeting but does not influence the technical aspects of slope design and implementation. Therefore, identifying the critical parameters affecting slope selection is a vital component of ensuring safe excavation practices.