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Which Scottish-born inventor opened a school to train teachers of the deaf in Boston and later built a device to transmit the human voice through a wire? A. Andrew Carnegie B. Henry Ford C. Gustav Eiffel D. Alexander Graham Bell
Gustav Eiffel was born in France and Henry Ford was born in the United States, so B and C are not the correct answers. Andrew Carnegie was an industrialist, not an inventor and Alexander Graham Bell did invent the first practical telephone, so he is the correct answer.
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