What should the explanatory information in tabulated data aid with?

The correct choice highlights the importance of explanatory information in tabulated data as it plays a crucial role in making informed decisions regarding protective systems. In construction and excavation, the safety of workers is paramount, and understanding the specifics provided in tabulated data helps identify the appropriate protective measures needed for various situations. These details may include factors like soil type, depth of excavation, and environmental conditions, which directly impact the selection of proper protective systems, such as trench boxes or shoring methods.

The other options, while important in their own contexts, do not specifically relate to the role of explanatory information in tabulated data as it pertains to protective systems. Determining project costs, assigning workers to tasks, and scheduling construction timelines may involve different types of data and analysis but do not directly connect to the safety considerations that the correct answer addresses. Therefore, having precise explanatory information in tabulated data is crucial for ensuring worker safety on site by guiding the use of the right protective measures.