Which of the following is a standard indicator for graphics files in hexadecimal?

The correct choice indicates the standard indicator for graphics files in hexadecimal, specifically for JPEG files. The hexadecimal value "FF D8" is recognized as the start of a JPEG file and is known as its "magic number." This value is critical in file identification during digital forensics because it helps to determine the type of file being analyzed. JPEG images use this indicator to signal that the file adheres to the JPEG format, which is widely used for photographs and other types of images due to its efficient compression and quality retention.

Other hexadecimal values mentioned correspond to different file types: "42 4D" indicates a BMP (bitmap) file, "4D 5A" refers to the executable files in the Windows PE format, and "89 50" is associated with PNG files. Understanding these hexadecimal signatures assists forensic analysts in identifying and verifying file types, making it easier to categorize and analyze data during investigations.