Which inference is more firmly based on the information in the passage? Early one morning, a man was walking along a sandy, deserted beach. At least he thought it was deserted. As he gazed ahead of him, he noticed that there was another human figure in sight. It was a boy who kept bending down, picking something up, and throwing it into the sea. He repeated the movement again and again and again. As the man drew near, he saw that the sand surrounding the boy was covered with starfish that had been washed in by the waves. It was these stranded starfish that the boy was throwing into the water. “ Why are you doing that?” the man asked. Not pausing, the boy replied, “The tide is going out, and the sun is rising. Soon the heat will be too much for the starfish, and they will die.” The man shook his head tolerantly. “My dear boy,” he said. “There are miles of beach and hundreds, maybe thousands of starfish. You can’t save them all. What you’re doing can’t make a difference!” The boy listened politely, then picked up the next starfish and threw it in the water. “It makes a difference for this one,” he answered.