Which medium uses radio waves for data transmission?

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Multiple Choice

Which medium uses radio waves for data transmission?

Explanation:
Wireless data transmission relies on radio waves to carry information through the air, so devices can communicate without physical cables. This is how Wi‑Fi, Bluetooth, and cellular signals work, enabling wireless connectivity. The other options are all wired media: copper Ethernet and coaxial cables carry electrical signals along metal conductors, while fiber optic cables use light to transmit data through glass. Because radio waves are used for wireless transmission, the medium described is radio waves.

Wireless data transmission relies on radio waves to carry information through the air, so devices can communicate without physical cables. This is how Wi‑Fi, Bluetooth, and cellular signals work, enabling wireless connectivity. The other options are all wired media: copper Ethernet and coaxial cables carry electrical signals along metal conductors, while fiber optic cables use light to transmit data through glass. Because radio waves are used for wireless transmission, the medium described is radio waves.

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