Which of the following can be considered a violation of the Rebuild Rules?

Failing to document changes made to the robot is indeed a violation of the Rebuild Rules because proper documentation is essential for ensuring transparency and compliance within the competition framework. The Rebuild Rules are established to maintain fair play and integrity, allowing teams to make improvements or repairs while keeping a clear record of modifications. When changes are not documented, it creates potential issues regarding the understanding of the robot's design, performance modifications, and adherence to the specific rules outlined by the competition authorities.

Documentation serves several purposes: it provides a reference for what has been modified or rebuilt, helps in verifying compliance with competition rules, and aids in the assessment of robot performance over time. Without this documentation, teams can inadvertently run afoul of the rules, jeopardizing their participation in the competition or resulting in penalties.

In contrast, using off-the-shelf components, implementing software updates, and adjusting robot configurations typically fall within permissible practices as long as they align with the established guidelines. Therefore, the lack of documentation represents a direct violation of the expectations set forth in the Rebuild Rules.