Which of the following will be considered a penalty even if there is no impact on the game?

Blocking with the head is considered a penalty regardless of its impact on the game because it poses a significant safety risk. Roller derby prioritizes the safety of all players, and using the head to block can lead to serious injuries not only for the player committing the infraction but also for the opponent. The rules are designed to maintain a level of safety and discourage dangerous behaviors, even if in a specific instance there may appear to be no immediate effect on gameplay. Therefore, penalties for such actions are strictly enforced to deter unsafe practices on the track, ensuring a safer environment for all players.

Other actions listed, while they may also result in penalties, often require some form of impact or consequence on the game to be penalized. For example, cutting the track typically affects gameplay by gaining an unfair advantage. However, blocking with the head is strictly prohibited for safety reasons, allowing referees to call it a penalty regardless of the situation on the track.