What functionality allows users to grab objects and move them on the computer screen?

The functionality that allows users to grab objects and move them on the computer screen is known as Drag-and-Drop. This interactive feature enables users to select an item with a mouse, hold the mouse button down, move the item across the screen, and release the button to place it in a different location. Drag-and-drop is commonly used in user interfaces for organizing files, repositioning items, and implementing interactive components in web applications.

Dynamic HTML, while it enhances the user experience by allowing web pages to change dynamically, does not specifically address the act of moving objects around the screen. Application Cache is a feature that helps web applications work offline by storing resources, and it does not relate to interactive object manipulation on the screen. An Emulator is a software that mimics one system's behavior on another, often used for testing applications, but it does not provide the functionality to drag and drop objects within a user interface.