Which inventor is associated with both the electric light bulb and the phonograph?

• A. Thomas Edison.
• B. Alexander Graham Bell.
• C. Eli Whitney.
• D. Cyrus McCormick.

Answer: (A)

Thomas Edison is the inventor connected to both the electric light bulb and the phonograph. He helped create a practical electric light bulb that could stay lit longer, making electric lighting commercially viable in the late 1870s. He also invented the phonograph in 1877, the first device capable of recording and reproducing sound. These dual achievements solidify his association with both innovations. In contrast, Bell is best known for the telephone, Whitney for the cotton gin, and McCormick for the mechanical reaper, so they don’t fit the question.