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

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

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

asked
User Mariatta
by
8.4k points

1 Answer

3 votes
All the devices listed above use waves except pony express. Therefore the answer is C.
answered
User Ihtsham Minhas
by
8.3k points
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