If the umpire grants time to B1 for the condition of the batter's box, what must occur next?

When the umpire grants time to the batter for conditions in the batter's box, the proper procedure is for the 20-second pitch count to restart. This is because when time is called, it interrupts the flow of the game, and upon resuming play, the timing for the next pitch begins anew. The rationale behind this rule is to ensure fairness and maintain the pace of the game.

In situations where time is granted, it is important that all players are aware of the active time limit for the pitcher, which helps in avoiding unnecessary delays. Thus, the initiation of the 20-second count again is a crucial aspect to maintain the game's rhythm following any stoppage.