What does the term "run rule" refer to in NCAA softball?

The term "run rule" in NCAA softball refers to a provision that allows a game to end early if one team builds a significant lead over the other. Specifically, this rule is implemented to shorten games when the outcome is deemed to be already decided, typically when one team leads by a certain number of runs after a specified number of innings. For example, if one team leads by eight runs after five innings, the game may be called in favor of the leading team, ensuring efficient use of time and preserving the competitiveness of the sport.

This concept is designed to prevent lopsided scorelines and can be especially important in tournaments to keep the schedule on track. The other answer choices do not accurately reflect the intent or application of the run rule; they misinterpret its purpose or scope within the context of the game.