Factory Pattern #region Pizzapublic class Pizza{ public void Prepare() { } public void Bake() { } public void Cut() { } public void Box() { }}public class VeggiePizza : Pizza{}public class ClamPizza : Pizza{}public class PepperoniPizza : Pizza{}public class CheesePizza : Pizza{}#endregionpublic class SimplePizzaFactory{ public Pizza CreatePizza(string type) { Pizza p..