Correct Answer:
B. Guglielmo Marconi
Correct answer: Guglielmo Marconi. Guglielmo Marconi is credited with developing the first practical radio (wireless telegraphy) in the 1890s.
- Alessandro Volta: Volta invented the electric battery.
- Graham Bell: Graham Bell is credited with the telephone.
- None of these: “None of these” is incorrect because Marconi is correct.
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