Which device is mostly used to carry user files?

The correct answer to this question is Floppy Disk. It is also known as a floppy, disk, or diskette. It is thin and flexible, used as a storage medium. The disc is closed in by a rectangular plastic lining, along with fabric that removes any dust particles. To read a floppy disk, a floppy disk drive is needed.

The traditional standard size of a floppy disk is 8 inches, but as years went on the size dropped from 5 1/4 to 3 1/2. Though they were accessible up until the first part of the 21st century, they have been replaced by flash drives and cloud space.