\begin{tabular}{l} Polymorphism is implemented via: \\ Member functions. \\ Non-virtual functions. \\ inline functions. \\ virtual functions and dynamic binding. \\ \hline\end{tabular}

Polymorphism is a core concept in object-oriented programming that allows methods to do different things based on the object they belong to. It's primarily achieved using virtual functions and dynamic binding, which enable a program to determine the correct method to invoke at runtime, allowing for more flexible and reusable code in complex systems. In the real world, polymorphism allows developers to create applications that can interact with a variety of object types seamlessly. For instance, a graphics application might use polymorphism to handle different shapes (like circles and squares) through a common interface, reducing the need for complex branching logic and making the code easier to maintain and extend.