Correct option is C
The correct answer is Messengers.
· The term communication may be referred to imparting or exchanging of information by speaking, writing, or using some other medium.
· People use different modes of communication to convey their messages.
· Human beings have evolved different methods of communication over time.
· On the basis of scale and quality, the mode of communication can be divided into the following categories:
Means of Communication
Personal
Letters Telephone Telegram, Fax, e-mail, Internet, etc.
Mass
Radio, Television Cinema, Satellite, Newspaper, Magazine and Public Meetings Seminar and Conferences, etc.
Some means of communication are:
Fax:
· It scans the contents of a document (as an image, not text) to create electronic signals.
· These signals are then sent to the destination (another FAX machine) in an orderly manner using telephone lines.
· At the destination, the signals are reconverted into a replica of the original document.
· The idea of FAX transmission was patented by Alexander Bain in 1843.
Mobile:
· The concept of mobile telephony was developed first in the 1970s.
· It was fully implemented in the 1980s and 1990s.
· It is one of the most common means of communication at the present time.
Messengers:
· In ancient times people used smoke signals, drum sounds, pigeons, and messengers as modes of communication.
· These were relatively slow, unreliable, and sometimes unsafe means of communication.Top of Form
Telephone:
· The telephone was invented by Alexander Graham Bell and Antonio Meucci in 1876.
· It is said to be one of the most widely used means of communication in the history of mankind.
Thus, in ancient times messages were communicated by messengers.
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