To override a method without declaring it virtual, we need to use the ___ modifier to tell the compiler that the derived class method “hides” the base class method.
Answer: The process of defining a method in the subclass that has the same name, same arguments, and same return type as a method in the superclass is called method overriding.
The ___ class is a base class that simply acts as a base for others and is not useful on its own.
abstract
The ___ methods are implicit virtual methods and do not provide any implementation.
Abstract
A class that cannot be sub-classed is called a ___ class.
sealed
A...class cannot override sealed methods.
derived
The ___ polymorphism is implemented using overloaded methods and operators.
Operation
