What must be done before lifting a ball that's cut or cracked?

Before lifting a ball that is cut or cracked, it is essential to mark the spot where it lies. This is important because when a ball is lifted, it must be replaced in the exact spot from which it was taken. Marking the spot ensures that there is no ambiguity about the position of the ball, which is crucial for fair play under the rules of golf. Once the spot is marked, the ball can then be lifted for examination or replacement.

Options like notifying a tournament official or obtaining permission from an opponent may be considerations in different contexts or circumstances. However, the fundamental rule is to ensure the accurate replacement of the ball, which is why marking the spot is the necessary first step. Looking for a replacement ball is also not required until the ball has been confirmed as damaged or unplayable. Hence, marking the spot is the immediate action that must be taken.