What does screen resolution measure?

Screen resolution refers specifically to the number of pixels that compose the displayed image on a screen. This measurement is typically represented in terms of width and height (for example, 1920 x 1080), indicating how many horizontal and vertical pixels there are. A higher screen resolution means that more pixels are packed into the same display area, which results in a sharper, clearer image with more detail.

Understanding screen resolution is crucial for tasks like graphic design, gaming, or any activity where image clarity and detail are important. Options related to brightness, contrast ratio, or physical size are distinct characteristics that do not pertain to the pixel count or clarity of the image itself. These characteristics might enhance the viewing experience but are not what determines the resolution of the screen.