Which of the following does not use electricity or radio waves to communicate? A.Radio B.Telephone C.Pony Express D.Telegraph

asked Oct 15, 2017 164k views

3 votes

Which of the following does not use electricity or radio waves to communicate?

A.Radio
B.Telephone
C.Pony Express
D.Telegraph

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3 votes

All the devices listed above use waves except pony express. Therefore the answer is C.

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