One day several boys were playing at the edge of a pond in which lived a family of frogs. The boys amused themeselves by throwing stones into the pond so as to make them skip on top of the water. The stones were flying thick and fast, and the boys were enjoying themselves very much; but the poor frogs in the pond were trembling with fear. At last one of the frogs, the oldest and bravest, put his head out of the water, and said " Oh, please, dear children, stop your cruel play! Though it may be fun for you, it mean death to us!" 27. Why did the frog feel insecure? A. The boy frightened them. C. The boys destroyed the pond. B. The stone would hurt them. D. The water in the pond got dirty.​