Important PointsThe following table sows the terminologies and their purposes of use in short,Computer termsPurposeOCROptical character recognition (OCR) technology is a business solution for automating data extraction from printed or written text from a scanned document or image file and then converting the text into a machine-readable form to be used for data processing like editing or searching. This can help reduce the amount of physical space required to store documents and can dramatically improve workflows involving those documents. OMROptical Mark Reading (OMR) is a method of entering data into a computer system. Optical Mark Readers reads pencil or pen marks made in pre-defined positions on paper forms as responses to questions or tick list prompts. The most common use of OMR is in offices, academics, and research departments where large numbers of hand-filled documents must be processed such as surveys, questionnaires, exams, reply cards, and ballots. OMR can handle hundreds of thousands of physical documents per hour, and its accuracy is up to 99%. emailelectronic mail or email is information stored on a computer that is exchanged between two users over telecommunications. Emails, forum comments, corporate intranet, serve as examples of asynchronous communication we deal with every day. Asynchronous communication is any communication that does not take place in real-time. Instant messagingInstant messaging, often shortened to IM or IM'ing, is the exchange of near-real-time messages through a standalone application or embedded software. It is an example of Synchronous messaging that is a two-way mode of communication. This means that both conversation parties are chatting at the same time, or synchronously. Therefore, the correct match is (A) - (I), (B) - (II), (C) - (III), (D) - (IV)