Comprehensive Guide to C# and .NET Core OOP Concepts and Language Features Class A  class  is a blueprint for creating objects that encapsulate both data and behavior. Key Points Access Modifiers:  public, internal, abstract, sealed control visibility and inheritance. Static Classes:  Cannot be instantiated, contain only static members. Partial Classes:  Split across files using partial keyword for better organization. Example public class Car {     public string Model;       public void Drive() => Console.WriteLine($"{Model} is driving."); } Analogy A  car blueprint  used to build many actual cars. Benefits Reusability Encapsulation of data and logic Supports abstraction and inheritance   Object An  object  is an instance of a class. Key Points Managed by  Garbage Collector ...