The correct answer is: C. Paper tape reader.
A paper tape reader is an input device that converts data punched into paper tape into a binary format. Paper tape is a long, narrow strip of paper with holes punched in it. The holes represent binary digits, which can be used to represent data. The paper tape reader reads the holes in the paper tape and converts them into electrical signals that can be processed by the computer.
A page reader is a device that scans pages of text and converts them into electronic form. This can be used to create digital copies of documents, or to input text into a computer.
A paper tape punch is a device that punches holes in paper tape to represent data. This data can then be read by a paper tape reader.
A card punch is a device that punches holes in cards to represent data. This data can then be read by a card reader.
Therefore, the correct answer is C. Paper tape reader.