Please choose the correct ending to complete the given sentence: Slacklining: A body of water is shown below the trees. a person

Ending1: runs with a shovel followed by a body of water. Ending2: goes over a waterfall on their bike. Ending3: walks along the bottom of the boat. Ending4: is walking on a slack line over the water.

Answer format: ending1/ending2/ending3/ending4