Final answer:
In powerlifting, a 'red light' ruling can be caused by the lifter moving their feet, bouncing the bar off their chest, or the bar stopping during the attempt, with all the above being reasons for disqualification.
Step-by-step explanation:
The main answer to the question regarding the cause for a "red light" ruling in bench press competitions is d. All of the above. In competitive powerlifting, certain rules must be followed for a lift to be considered successful. These include maintaining foot position, avoiding bouncing the bar off the chest, and ensuring the bar does not stop moving upward during the attempt.Explanation in more than 100 words: When a lifter moves their feet during the lift, it is generally considered a loss of control, which is grounds for disqualification of the attempt. Additionally, "bouncing" the bar off the chest is not permitted, as the bar must be brought to a complete stop on the chest before the lifter attempts to press it upward. Lastly, if the bar stops during the lift, it can indicate that the lifter is unable to complete the lift in a continuous motion, which is necessary for the lift to be successful.Conclusion: Understanding and adhering to these rules is crucial for powerlifting competitors, as failure to do so will result in a lift being disqualified, or receiving a "red light" from the judges, indicating an unsuccessful attempt.