正解:A
The aspect ratio of the scene depicted in the image is 16:9. This widescreen format is commonly used in modern video applications, including network video surveillance. The 16:9 aspect ratio provides a wider field of view, which is beneficial for monitoring large areas and capturing more detail horizontally. Axis cameras often support this aspect ratio to provide comprehensive coverage in surveillance environments. The documentation confirms that 16:9 is a standard aspect ratio for many Axis network cameras.