What is the outcome for R2 who misses third base while touching home plate?

The correct response is that R2 is called out on appeal because, in baseball, runners must touch all bases in order, including third base, before scoring. If a runner misses a base and the defensive team appeals the missed base, the runner can be called out.

In this situation, although R2 does touch home plate, the failure to touch third base means that the run does not count, and this can be appealed by the defense. The appeal rule is in place to ensure that all bases are properly touched during a play, and since R2 did not do this, the defensive team has the right to appeal for an out. This scenario emphasizes the importance of following the base-running rules accurately to avoid being put out due to a missed base.

The other options do not accurately reflect the rules governing base running. For instance, claiming that R2's run counts if he touches home does not hold, as all bases must be legally touched for a run to count. Similarly, stating R2 is safe and cannot be appealed contradicts the appeal process that allows the defense to challenge missed bases. Lastly, suggesting that R2 may return to third base is inaccurate since a runner cannot simply go back to a previously touched base after missing another;