The correct answer is Scanner.A scanner is an input device that scans documents such as photographs and pages of text.A scanner is not an external memory. It is a machine.When a document is scanned, it is converted into a digital format.This creates an electronic version of the document that can be viewed and edited on a computer.?Additional Information Digital Versatile Disc (DVD)It is a type of optical media used for storing digital data.A standard video DVD can store 4.7 GB of data.Pen drive is a small storage device shaped like a pen with built-in data storage that connects to a computer by a USB port.The hard disk is a spindle of magnetic disks, called platters, that record and store information.Because the data is stored magnetically, information recorded to the hard disk remains intact after the computer is turned off.