Answer:
The correct answers should be A) Thomas Edison, who developed most of his work in the time period referred in the question. C) Alexander Graham Bell, who cofounded the American Telegraph Company in 1885, that is to say, in the late nineteenth century. E) Henry Ford, who founded the Ford Motor Company in 1903, that is to say, in the early twentieth century, and F) The Wright brothers, who were succesfull in flying a plane in the early twentieth century.
Incorrect answers
B) Robert Fulton is an incorrect answer because he died in 1815, earlier than the time period referenced in the question, and D) Samuel Gompers E., because while he was an important figure in the labor and union movement, he does not fall into the category of technological innovator that the questions, and the other anwers, seem to imply.