Question

Polymorphism means ______________.

Answer 1

Answer:

(c) that a variable of supertype can refer to a subtype object.

Explanation:

Polymorphism, in the real sense of it, means appearing in different forms. In the programming concept, the same object can hold different data types depending on its reference. A function can take different kinds of arguments at different situations and process them accordingly. So when a variable of supertype can refer to a subtype object, polymorphism is at work.

However, when data fields are declared private (as in option a), then we have encapsulation.

Also, when a class can extend another class (as in option b), we have inheritance in action.

When a class contains another class (as in option d), we have a nested class .

Answer 2

Answer:

Polymorphism means that a variable of supertype can refer to a subtype object.

Explanation:

For example, in Python programming language, a function that accepts an iterable object uses the concept of polymorphism because that function can accept strings, lists, tuples as arguments.