Please choose the correct ending to complete the given sentence: Horseback riding: People ride horses in the shallow waters of the sea. People ride the horses in the water along the shore. A horse defecates in the water. people

Ending1: form a line with the horses while riding in the ocean. Ending2: swim in the choppy water. Ending3: stand on the horses giving the people water water when children stand on the sides. Ending4: assist the horses in the water.

Answer format: ending1/ending2/ending3/ending4