What is meant by multiple inheritance ?

Question

Accepted Answer

The correct option is (3):
Multiple inheritance is a fundamental feature of Object-Oriented Programming (OOP) in languages like C++, where a single child class, also known as the derived class, is allowed to inherit attributes and methods from two or more parent classes, which are referred to as base classes. This powerful design choice enables the derived class to combine the functionalities and characteristics of diverse existing classes into a single new entity. For instance, a class representing a `FlyingCar` could inherit from both an `Aircraft` class and a `Car` class, thereby gaining the properties for both air and ground travel. This capability significantly promotes code reuse and allows for the modeling of highly complex, multi-faceted real-world relationships.

The incorrect option is (1):
Deriving a base class from a derived class is a logically inconsistent and non-existent concept in the context of standard object-oriented inheritance. Inheritance defines a strict "is-a" hierarchical relationship where the more specific, derived class is built *upon* the more general, base class. The flow of dependency and structure is always from the base class downward to the derived class. A base class, by its definition, is the foundational parent and cannot structurally obtain its features from one of its more specialized descendants.

The incorrect option is (2):
Deriving a derived class from a base class correctly defines the concept of *Single Inheritance*. This is the most basic and common form of inheritance, where a new class inherits from only one direct parent class, establishing a single, clear linear relationship. However, the question asks for *Multiple* inheritance, which is specifically characterized by inheriting from *more than one* base class. Therefore, this option describes a different, simpler type of class relationship.

The incorrect option is (4):
Because option (3) accurately provides the precise, standard definition of multiple inheritance, the choice "None of the mentioned" is factually incorrect and cannot be the answer.