Please choose the correct ending to complete the given sentence: Fun sliding down: A young child sits a the top of a very wide concrete slide. the child and others

Ending1: go down the slide. Ending2: walk backwards to make their way up it at a steady speed. Ending3: are shown in several clips sitting and gliding down the slide. Ending4: twirl around down the slide on a yellow flipper.

Answer format: ending1/ending2/ending3/ending4