The correct answer is C. Master tape.
A master tape is a magnetic tape volume that is used on a data processing operation without any change to its contents. It is used to store data that is needed for multiple operations, such as payroll data or inventory data. Master tapes are typically created once and then used repeatedly.
A magnetic disk is a data storage device that uses magnetic fields to store and retrieve data. Magnetic disks are typically used to store data that needs to be accessed quickly, such as the operating system or applications.
Punched paper tape is a data storage medium that uses holes punched in a paper tape to represent data. Punched paper tape was once widely used in computers, but it has been largely replaced by magnetic tape and other storage media.
A card reader is a device that reads data from punched cards. Punched cards were once widely used in computers, but they have been largely replaced by other input devices, such as keyboards and mice.
E is not the correct answer because it is not a type of data storage device.