Multiple Choice
Which of the following statements is true about radio as we know it?
A) It was invented by Heinrich Hertz.
B) It was initially invented as a way of carrying advertising.
C) It first went on the air in 1939.
D) It depended on a series of inventions and discoveries over a 40- to 60-year perioD.
Correct Answer:
Verified
Correct Answer:
Verified
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