Final answer:
In OOP languages, you must register components to make them capable of responding to events. This involves setting up event listeners and handlers for various components such as GUI elements to respond to user interactions.
Step-by-step explanation:
With most Object-Oriented Programming (OOP) languages, you must register components, or sign them up so that they can react to events initiated by other components. This process is commonly referred to as event handling where objects can listen for and respond to events or actions taken by a user or another object within the application.
For instance, in a graphical user interface (GUI), a button object must be registered with an event listener to be able to execute its event handler when it is clicked.
In most object-oriented programming (OOP) languages, you must register components or subscribe to them so that they can react to events initiated by other components.