A. Incandescent lamp
B. Phonograph C (Gramophone) and microphone
C. Carbon telephone transmitters
D. All of the above
✅ The correct answer is option D.
Incandescent lamp, Phonograph C (Gramophone) and microphone and Carbon telephone transmitters inventions were done by Thomas Alva Edison. Thomas Alva Edison was an American inventor and businessman who has been described as America’s greatest inventor. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures.
Incandescent lamp, Phonograph C (Gramophone) and microphone and Carbon telephone transmitters inventions were done by Thomas Alva Edison. Thomas Alva Edison was an American inventor and businessman who has been described as America’s greatest inventor. He developed many devices in fields such as electric power generation, mass communication, sound recording, and motion pictures.