A student instructed to design a device that can allow one user to hear the voice of another user at a distance of 5 kilometers which statement describes the most applicable basic design concept? A. Device designed to create a strong magnetic field should be developed b. Device designed to turn an electric current into heat should be developed c. Device designed to produce waves with large amplitudes should be developed d. Device designed to transmit electromagnetic waves through the air should be developed

Answer 1

d. Device designed to transmit electromagnetic waves through the air should be developed