When can a ball be replaced during a round?

The scenario where a ball can be replaced during a round includes situations in which it is cut or cracked. In golf, the rules clearly state that if a ball is damaged during play, specifically when it suffers a cut or crack that affects its performance or integrity, the player is allowed to replace it. This is essential for maintaining fair play and ensuring that all participants are using equipment that meets the standards of play.

In contrast, options indicating that a ball can only be replaced when it is lost, or simply at the player's discretion, do not align with the rules governing ball replacement. Balls can also be replaced under specific circumstances, such as when they are out of play or other conditions outlined in the rules, but the critical aspect is that the allowance for replacement due to damage is a fundamental part of maintaining the game's integrity.