Please choose the correct ending to complete the given sentence: Scuba diving: A close up of rings are shown floating around an ocean followed by a scuba diver off into the distance. the swimmer

Ending1: goes through a ring while popping it's side and continues moving up to the surface. Ending2: swims around unknown areas while diving underneath multiple bodies of water and rocks. Ending3: squats down and rubs against the pool floor as others watch on the side. Ending4: leads a class with a large group of children walking around and holding hands with each other.

Answer format: ending1/ending2/ending3/ending4