In test cricket, if nine wickets are down at the end of the over and the tea time has been reached, then the umpires can choose to extend the play for a period not exceeding:

In test cricket, when nine wickets are down at tea time, umpires may extend play by up to 30 minutes to allow the final wicket or conclusion of the innings. This provision prevents artificial delays at scheduled breaks. Options A (20 min), B (25 min), and D (15 min) are incorrect as 30 minutes is the maximum extension permitted.