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
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.