When, during a cricket match, can a cricket ball be replaced?

When, during a cricket match, can a cricket ball be replaced?

A new, high polished ball is used at the start of each innings in a match. A cricket ball may not be replaced except under specific conditions described in the Laws of Cricket, like if the ball becomes damaged, or lost. Or, if the condition of the ball is illegally modified by a player. After a specified number of overs (80 in Test cricket), the captain of the bowling side has the option to take a new ball. The ball is not replaced if it is hit into the crowd – the crowd must return it. If the ball is damages, lost or illegally modified, it will be replaced by a ‘used’ ball in similar condition to the replaced ball.