Answer Posted / hassan arafat

Polymorphism allows an entity (for example, variable,
function or object) to take a variety of representations.

Ad-hoc polymorphism: This polymorphism let a function to
have different implementations based on its parameters and
return type. Ad-hoc polymorphism is supported through
function and method overloading.
Parametric polymorphism: lets you write a piece of code
that is not associated with a particular type and therefore
can be used with any type. Object oriented languages like
C# achieve it through generics.
Inclusion polymorphism: let a type hold instances of many
different types as long as the types are related by some
common parent class. Object oriented languages like C#
achieve inclusion polymorphism through inheritance.

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