In the event that R1 and B2 fail to touch their respective bases upon advancing, what is the correct behavior at the time of a proper defensive appeal?

In baseball, when a runner fails to touch a base while advancing, it creates an opportunity for the defense to make a proper appeal. If the defense appeals correctly, each runner can be called out for missing a base. This applies regardless of other situational factors, as the fundamental rule holds that a runner is required to legally touch all bases in order to be considered safe.

The ruling emphasizes the importance of the defensive team's opportunity to catch missed bases through an appeal. Therefore, when the defense points out that R1 and B2 failed to touch their respective bases, and a proper appeal is made, both runners are subject to being ruled out. This maintains the game's integrity by enforcing the rule that all bases must be properly touched, reinforcing the concept of base running responsibility.

The other options present situations that do not align with the rules governing the game. For instance, the notion that runners can be safe if the ball is out of play fails to recognize the definitive nature of the appeal process. The idea that only R1 can be called out while B2 is safe contradicts the requirement that each runner must advance legally. Lastly, claiming that both can be safe without a defensive appeal overlooks the rule that emphasizes the importance of making these appeals for enforcement