Review of inheritance & polymorphism

(a)   is an OOP technique that allows one class to inherit the attributes and methods of another class.

In an inheritance relationship, the parent class can also be referred to as the (a)   or base class. The child class can be referred to as the subclass or derived class.

Inheritance is shown on a UML diagram with hollow-headed arrows that point (a)   from child to parent.

Subclasses can be extended with additional (a)   and methods.

Inherited methods can be (a)   to change their functionality and make the behaviour more appropriate to the subclass.

(a)   is the ability of the system to process objects differently depending on their data type or class.