What is polymorphism in Python?

Polymorphism in Python refers to the ability of different classes to be treated as instances of the same class through a common interface. Specifically, it allows methods to be defined in a child class that have the same name as methods in the parent class. This enables the child class to provide its specific implementation while maintaining the same method name, thus allowing for more flexible and interchangeable code.

For example, consider a base class named Animal with a method speak(). If there are two subclasses, Dog and Cat, both can implement their own versions of the speak() method. This way, you can invoke the speak() method on an instance of either class without needing to know which specific class the instance belongs to. This feature promotes code reusability and makes it easier to extend and maintain the code.

The other options do not accurately represent the concept of polymorphism. Defining methods in a child class with different names does not achieve polymorphism because it does not utilize the same interface. Assigning multiple values to a single variable is unrelated to polymorphism; it pertains to variable assignment and data structures. Similarly, creating a subclass without a parent class does not involve polymorphism; it's about inheritance, and