OOPS, or Object-Oriented Programming System , is a programming paradigm that organizes software design around objects rather than functions or logic. An object is an instance of a class, which can contain data (attributes or properties) and methods (functions or behaviors) that operate on the data.OOP concepts help organize and structure code for better reusability, scalability, and maintenance. Here are the core OOP concepts in C#: 1. Encapsulation Encapsulation is the process of keeping data and methods that operate on that data within a single unit (i.e., a class) and restricting direct access to some of the object's components. This is achieved in C# by defining access modifiers like public , private , and protected . Example : csharp Copy code public class Car { private int speed; // Private field - accessible only within the class public int Speed // Public property with getter and setter { get { return speed; } set { speed = valu...