What is prohibited concerning robot activation on the field?

The prohibition concerning robot activation on the field is crucial for maintaining fair competition and the integrity of the matches. Enabling robots before a match starts is against the rules because it ensures that all teams have the same opportunity to prepare and start on an equal footing. If one robot were to be activated before the match begins, it could lead to an unfair advantage, potentially allowing that team to test their robot's functions or adjust strategies prior to the official start of the competition.

This rule emphasizes the importance of structured and regulated operations during match play, ensuring that all competitors engage under the same conditions and adhere to the established timeline. The other options, while related to gameplay, do not specifically address the activation of robots in the same way as this option does.