Can decorative markings be placed in the end-zone?

Decorative markings can indeed be placed in the end zone, provided they adhere to specific guidelines regarding their positioning. The correct choice states that these markings must be placed at least 2 feet from the boundary to ensure they do not interfere with gameplay or create potential hazard zones. This regulation helps maintain a clear and safe space for players on the field while allowing for some creativity in the presentation of the end zone.

Other options do not reflect the allowance for decorative markings in a way that follows the rules. For example, the option stating "No, never" incorrectly implies that any markings are prohibited, failing to recognize that approved decorative elements can be included under proper conditions. The choice indicating they can be placed on the goal line alone overlooks the broader context that marks can be further into the end zone. Lastly, stating that approval by the referee is required for markings could be misinterpreted since specific permissible guidelines already exist, thus making independent approval unnecessary in the absence of violations.