___________ not only sells products but also spreads social awareness.
Newspaper
Telegram
Advertising
Fax
Radio was invented by________________.
Marconi
Graham Bell
George
None of these
______________ is the fastest means of communication.
Telephone
Telegraph
Television
__________ has made television a popular and effective media.
Cable connections
Computer
Samuel Mores inverted the ________________ telegraph machine.
Electric
Synthetic
_____________ transmit the exact matter of a document, letter or picture from one place to another.
Printer
_________ is one of the most common and cheapest means of spreading information.
Radio