If a team opts to use a courtesy runner each time the pitcher reaches base, is that required?

The correct answer indicates that using a courtesy runner when the pitcher reaches base is optional for each team. In softball and baseball, the rules allow teams to utilize a courtesy runner for the pitcher or catcher if they choose to do so. However, it is not compulsory; teams can decide whether or not to implement this practice based on their strategy, player availability, and game situation.

The option suggesting that it is mandatory is incorrect because there is no rule that forces teams to use a courtesy runner; it is left to each team's discretion. The notion that it is only applicable during playoffs or that it must be requested by the pitcher is also incorrect because the decision to use a courtesy runner applies uniformly throughout the season and is not dependent on individual requests or specific game situations.