Who invented the telephone?

• A. Thomas Edison
• B. Alexander Graham Bell
• C. Captain of Industry
• D. Robber Baron

Answer: (B)

The idea being tested is identifying who is credited with creating the telephone and understanding its historical impact. Alexander Graham Bell is the figure most widely credited with inventing the telephone; he secured the first successful patent for the device in 1876 and demonstrated a working telephone, which launched the practical era of voice communication over distances. This achievement didn’t come from a generic role or stereotype about industrial leaders—unlike the other options, which point to a famous inventor for many inventions or to broad labels rather than a person who actually invented the telephone. Edison did groundbreaking work in other technologies, but not the telephone, and the phrases “Captain of Industry” or “Robber Baron” describe types of people, not the inventor. So Bell’s name is the correct choice because he is the one who patented and demonstrated the device that made telephone communication possible.