Which of the following inventions is Thomas Edison primarily credited with?

Thomas Edison is primarily credited with the invention of the light bulb, specifically for developing the first commercially viable incandescent light bulb. While he did not invent the light bulb itself—there were earlier versions from other inventors—Edison significantly improved the design and functionality, making it practical for widespread use. His innovations included creating a better filament and a vacuum-sealed glass bulb, which allowed the light bulb to have a longer lifespan and be more efficient. Edison's work with electric light fundamentally transformed society by enabling the widespread use of electric lighting, which greatly impacted daily life and industry.

The other inventions listed are associated with different individuals; for example, Alexander Graham Bell is credited with the invention of the telephone, while the sewing machine was innovated by several inventors, including Elias Howe and Isaac Singer. The airplane's invention is primarily attributed to the Wright brothers.