Please choose the correct ending to complete the given sentence: Snow tubing: People are walking up a hill with tubes. A woman is seen tubing downhill. a man

Ending1: is playing in the water. Ending2: walks behind the camera. Ending3: then demonstrates how to use a snow tube. Ending4: is shown speaking to changes in how to do downhill.

Answer format: ending1/ending2/ending3/ending4