A variable declared to be of one class can later reference an extended class of that class. This variable is known as
A) protected
B) derivable
C) cloneable
D) polymorphic
E) None of these; a variable declared to be of one class can never reference any other type of class, even an extended class

Question

Quizplus · Accepted Answer

A variable declared as an instance of a class can later reference an extended class of that class if the extended class has an "is-a" relationship with the original class. This is known as polymorphism. It allows for greater flexibility and code reuse in object-oriented programming.

A Variable Declared to Be of One Class Can Later