Question

What do the telegraph and the telephone have in common?

A. Both require the input of human data to communicate.

B. Both use electricity and radio waves to communicate.

C. Both use the national highway system to communicate.

D. Both require plutonium to communicate.

Answer 1

Hey what do you think>

Answer 2

Telephone -a system that converts acoustic vibrations to electrical signals in order to transmit sound, typically voices, over a distance using wire or radio.

Telegraph- a system for transmitting messages from a distance along a wire, especially one creating signals by making and breaking an electrical connection.