According to the 'manage by exception’ principle, which statement about tolerances is CORRECT?

According to the 'manage by exception' principle in PRINCE2, when any forecast indicates that tolerances are likely to be exceeded, this issue must be escalated to the project board for decision-making. This principle supports efficient use of management time by only involving them when necessary, such as when predefined thresholds are anticipated to be breached.References: PRINCE2® 7 Foundation handbook and documentation on the 'manage by exception' principle.