Which of the following describes the location of backs in a scrimmage kick formation according to the rules?

In a scrimmage kick formation, it is specified that one back must be at least 7 yards behind the line of scrimmage. This requirement ensures that the player is positioned appropriately to execute a kick effectively. The rule is designed to enhance the safety and style of play during scrimmage kicks, as it allows for better protection of the kicker and gives the kicking team an adequate time and space to prepare for the kick.

The requirement for the back to be positioned this way helps to differentiate the roles during a scrimmage play and enables strategic placement on the field. By adhering to this rule, teams can optimize their offensive plays and maintain compliance with the regulations set forth to govern football play.