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The term "resolution" in AV (Audio-Visual) technology predominantly refers to the clarity and detail in an image or video. It is quantified by the number of pixels in each dimension that the display can show. Higher resolution translates to more pixels, which results in greater detail and sharper images, enhancing the visual experience. Common standards include 720p (HD), 1080p (Full HD), and 4K (Ultra HD), where each increment means a higher pixel count and, thus, improved clarity.

While the other options touch on various aspects of AV technology, they do not align with the specific meaning of "resolution." The total cost of equipment relates to budgeting, the number of inputs available on a device pertains to connectivity options, and the audio quality rating of a system addresses sound performance. Each of these elements is essential in AV technology but does not redefine the concept of resolution as it applies to image and video clarity.