Question

How are a telegraph, a radio satellite, and a wireless computer network related?
A.
They are devices from different time periods that all transport matter across short distances.
B.
They are all modern devices that use visible light to send messages across long distances.
C.
They are a historical sequence of devices that encode and transmit information using wave technology.
D.
They are all outdated devices that were used to send digital signals using X-ray technology.

Answer 1

C.
They form a historical sequence (telegraph → radio → wireless networks) that encode and transmit information using electromagnetic wave/electric signal technology.