Which statement best describes the recommended timing for removing unneeded attributes and geometry?

• A. At the beginning
• B. In the middle
• C. As late as possible
• D. Never remove attributes.

Answer: (C)

Preserve attributes and geometry through the workflow and remove them only when they’re no longer needed, ideally just before writing the final data. Keeping everything available during processing lets every transformer access the values it may rely on for calculations, routing decisions, and geometry edits without forcing you to recreate or re-fetch information. Removing unneeded data as late as possible minimizes the risk that downstream steps will fail or require rework plus it helps keep the intermediate workspace lean enough to run efficiently. If you drop attributes too early, later steps might depend on them and break; removing in the middle can disrupt the workflow; and never removing them leaves extra data in memory and in the output, which is undesirable.