Violet raised her hand and said. "The creators included a lake because it would suit a habitat for both land and water creatures, such as the merpeople, squids and others, as well as a water supplement for land creatures to drink." Violet took a deep breath for continuing on, "Of course, it's also a good transportation route for boats and other objects for example when there was the triwizard tournament where other wizarding schools could travel to." Violet thought it was very good for her first answer at the professors question and smiled.