Which of the following is the character that allows the computer to verify whether a...

Explanation

Many codes have integrated check digits. These are additional numbers or characters added to codes that a computer uses to verify the number is valid. The intention is to reduce the likelihood of miskeying an item and hitting an alternative live item. More often, a system is devised which a computer can calculate using combination of numbers.

Barcode is a graphic symbol used to convey data. Typically the characters in a barcode symbol consist of bars/space pattern. Barcode is the method of representing data in a visual, machine-readable form. Initially barcodes represented data by varying the width and spacing of parallel lines.

Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects.

A prefix is an affix which is placed before the stem of a word or a string. A product code may have prefix which indicates its group, country, origins, etc.