Description: The ‘Task Completion Source’ is a class in C# that provides a way to create a Task that can be completed manually. This class is part of the System.Threading.Tasks namespace and allows developers to have more granular control over the lifecycle of an asynchronous task. Unlike tasks that start automatically, a ‘Task Completion Source’ enables programmers to define when and how the task is completed, which is especially useful in situations where the result of the task depends on external events or the completion of other operations. The class includes methods such as SetResult, SetException, and SetCanceled, which allow setting the task’s result, indicating that an exception has occurred, or that the task has been canceled, respectively. This flexibility is crucial in applications that require precise management of concurrency and synchronization, such as in software development for various platforms, including desktop applications, web services, and mobile applications. In summary, the ‘Task Completion Source’ is a powerful tool for handling asynchronous tasks in C#, providing developers with the ability to effectively control the flow of execution.