Question: The reason modulation is used in electronic communication is: a . Since all intelligence signals occur at approximately the same frequency, there would be catastrophic

The reason modulation is used in electronic communication is: a

.

Since all intelligence signals occur at approximately the same frequency, there would be catastrophic interference problems if these frequencies were used. b

.

Audio frequency radio waves do not propagate long distances very reliably. c

.

Efficient transmission and reception of radio waves are not possible unless extremely large antennas are used. d

.

All of the above.

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