Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to avoid disqualification during an individual medley [title] Be careful at the beginning of the race. [step] The first chance to dq is before you even start your swim, when you step up on the block. When the official says, " take your mark, " you must take your mark and not move until the signal to start is given.

Ending1: Keep your hands in your pockets, and as you step on the block, swing your arms up and down like a toga right. ( caution: " hold tight to the blocks until one of the other swimmers makes the ahead. Ending2: [substeps] If you take your mark at the edge of the pool, you're not disqualified. If you've carried your mark all the way across the pool, but only it is currently nearby, you're disqualified. Ending3: You must move quickly, rushing, and get to the end of the block or pit you're trying to attain. The last thing you want to do is lean and fall over. Ending4: You cannot move your feet, hands, head or chest after you take a position. [title] Watch for an error when pulling out.

Answer format: ending1/ending2/ending3/ending4