What is the function of using the Control key while scrolling using a mouse?

Using the Control key while scrolling with a mouse is typically associated with adjusting the size of pages, particularly in applications like web browsers or document viewers. This function allows users to zoom in or out on content, making it easier to view details or fit more information on the screen, depending on the user's needs.

When you hold down the Control key and scroll up, you generally increase the size of the displayed text and images, making them larger on your screen. Conversely, scrolling down while holding the Control key decreases the size, allowing for a broader view of the document or webpage. This feature is particularly useful in contexts where precise visual interpretation of content is essential, like reading fine print or adjusting images to fit a layout.

Other options listed do not directly relate to this specific function. Adjusting volume levels typically involves dedicated keys or sliders, navigating back to previous pages is often managed through specific browser controls, and opening new tabs is usually achieved through shortcuts or mouse clicks rather than scrolling. Therefore, the role of the Control key during scrolling is firmly linked to resizing and zooming functionality, making it the correct response in this context.