Define "polymorphism" in programming.

Polymorphism in programming is defined as the ability of different objects to be accessed through the same interface. This concept allows methods to perform differently based on the object that it is called upon, enabling a unified method call for various types. For example, if you have a base class and several derived classes, you can call the same method on instances of these derived classes, and each instance can exhibit behaviors specific to its class type while sharing the same interface.

This characteristic is crucial for achieving flexibility and the ability to extend systems without altering the underlying code significantly. It promotes code reusability and makes it easier to implement shared functionality across diverse data types. By emphasizing a common interface, polymorphism enhances the dynamic nature of programming languages, thereby allowing developers to implement more complex behaviors with simpler and cleaner code architecture.

The other choices do not accurately capture the essence of polymorphism or relate to broader programming concepts rather than this specific feature.