What is the penalty for illegal motion?

The penalty for illegal motion is 5 yards from the previous spot. This infraction occurs when a player in motion at the snap does not follow the rules pertaining to motion, such as moving without the proper number of players set legally or not being set for the required time before the snap.

In football, a 5-yard penalty is a common enforcement amount for minor infractions, which helps maintain the flow of the game without delivering overly harsh consequences for less severe violations. This penalty is applied by moving the ball back 5 yards, which can impact the offensive team's ability to advance the ball and potentially change their strategy on the next play.

The other response options do not correctly reflect the standard penalty for illegal motion and would not apply in practice. A 15-yard penalty, for instance, is typically reserved for more severe fouls like personal fouls, while a 10-yard penalty might relate to things like holding or illegal formation. No penalty would imply that the infraction did not occur, which is not the case when illegal motion is called. Thus, the 5-yard penalty is the appropriate enforcement for this situation.