This question is incomplete, here´s the complete question.
Microphone, motion-picture camera, and motion-picture camera.
All of these are associated with what great inventor?
Answer: Thomas Alva Edison
Explanation:
Edison´s was one of the world's most prolific inventors, and some of his designs were fundamental to the development of sound His Carbon Microphone (1877-78) helped further develope Graham Bell´s telephone. And his Kinetoscope, Kinetograph and Kinetophone (1888-1890s), developed with his assistant William Dickson, allowed to watch and record motion pictures.
