Final answer:
The purpose of the Angular lifecycle hook ngAfterViewChecked() is to respond after Angular checks the component's views and child views.
Step-by-step explanation:
The purpose of the Angular lifecycle hook ngAfterViewChecked() is to respond after Angular checks the component's views and child views. It is called after the component's view has been fully checked, including any child components. This hook is useful for performing any additional actions or updating the view based on the changes that occurred during the check phase.