What is the ruling when the defense tags a batter/runner returning to first base after overrunning it?

In this situation, the ruling is that the runner is safe when the defense tags them while returning to first base after overrunning it. This is because a runner returning to the last base they legally touched (in this case, first base) has a right to that base unless they are put out in a legitimate manner as defined by the rules.

When a runner overruns first base, they are allowed to turn to either direction, and as long as they are not attempting to advance or are not in the baseline leading to second base, they maintain their base rights. Therefore, unless the runner makes an attempt to advance to second and is subsequently tagged out, they cannot be ruled out merely for being tagged while returning to first. This understanding reinforces the importance of knowing the nuances of running rules in baseball.

The other options do not align with the established rules governing base running and tagging in baseball, as they either misinterpret the conditions under which a runner can be out or rely on subjective judgment that is not necessary in this context.