What should competitors report with at their appointed time?

Competitors should report with their official portfolio and two additional plain papers to ensure they have all the necessary documentation and materials for their presentation or assessment. The official portfolio typically contains key information about the competitor's project, including research, references, and project details. The addition of the two plain papers allows competitors to have extra space for notes, any additional information they may want to showcase, or to take notes during the review process. This comprehensive preparation helps to showcase their work effectively and allows for a complete evaluation by judges.

The requirement for only an ID, just project materials, or merely note cards would not provide the full context or documentation needed for a thorough presentation or assessment, which is why the option highlighting the importance of the portfolio and additional papers stands out as the most appropriate choice.