Under the MCC Laws of Cricket, a delivery that passes without pitching above what height of the striker (standing upright at the popping crease) must be called a no-ball, regardless of the bowler's pace?

Answer Explanation

Law 41.7.1 states that any full-toss delivery passing above waist height of the striker standing upright at the popping crease is unfair and must be called a no-ball, with 'waist' defined as the top of the trousers.