In an object-oriented system, polymorphism denotes:
A.
Objects of many different classes that are unrelated but respond to
some common set of operations in the same way.
B.
Objects of many different classes that are related by some common
superclass; thus, all objects denoted by this name can respond to some
common set of operations in identical fashion.
C.
Objects of many different classes that are related by some common
superclass; thus, any object denoted by this name can respond to
some common set of operations in a different way.
D.
Objects of the same class; thus, any object denoted by this name can
respond to some common set of operations in the same way.
Explanation:
Objects of many different classes that are
related by some common superclass that are able to respond to some
common set of operations in a different way.
The other answers are incorrect by the definition of polymorphism.