For unnecessary roughness due to intentional grounding, what is the penalty?

In the case of unnecessary roughness resulting from intentional grounding, the correct penalty enforcement includes both a specific yardage loss and a loss of down. The penalty for unnecessary roughness is generally quite severe to discourage excessively aggressive conduct that endangers players. Thus, the enforcement reflects a 15-yard penalty as well as the retention of the down.

Intentional grounding, on the other hand, is treated separately and carries its own distinctive penalties, typically involving a loss of down as well as yardage. The consequences for this action aim to ensure fair play and protect players' safety by discouraging intentional infractions.

This combination of penalties—5 yards and loss of down—represents a comprehensive consequence aimed at penalizing not just the act of intentional grounding itself but also the unnecessary roughness that may have occurred as part of that infraction. Therefore, the selected answer accurately addresses the correct enforcements for such infractions under NFHS rules, balancing field position impact with maintaining game integrity.