Abstraction is a core concept of OOP that focuses on hiding unnecessary implementation details while exposing only the essential features of an object. This is achieved through abstract classes and interfaces. For instance, a Car class might expose methods like start() or drive() without detailing how the engine works internally. Abstraction simplifies the development process by allowing programmers to focus on high-level logic rather than low-level complexities. It also enhances security by preventing direct access to sensitive parts of an application. Why Other Options Are Incorrect : 2. Restricting access to certain parts of an object to protect data : This describes Encapsulation , not Abstraction. Encapsulation involves bundling data and methods together and using access modifiers to control visibility. 3. Combining different objects into a single unit to represent a relationship : This describes Aggregation , where objects are linked to represent "has-a" relationships, like a Library having Books. 4. Allowing multiple classes to share the same method name but with different implementations : This defines Polymorphism , specifically method overriding or overloading, and is unrelated to abstraction. 5. Establishing a parent-child relationship between classes : This is Inheritance , where one class derives from another, enabling code reuse and hierarchy building.
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