Who improved the assembly line and automobile manufacturing?

• A. Henry Ford
• B. Thomas Edison
• C. Alexander Graham Bell
• D. Nikola Tesla

Answer: (A)

The main idea is how mass production was transformed by a moving assembly line and standardized parts, making products like cars faster to assemble and cheaper to produce. Henry Ford popularized this approach in automobile manufacturing, introducing the moving assembly line in the early 20th century. By organizing work so that each worker performed a simple, repeated step and by using interchangeable parts, production sped up dramatically and costs fell. This shift made cars like the Model T affordable for many more people and set a new standard for manufacturing across industries.

The other inventors mentioned contributed to innovations in electricity and communication, not to the assembly-line method used in car production. Edison helped advance electric light and power, Bell developed the telephone, and Tesla advanced alternating current and other electrical technologies.