Multiple choice general knowledge

What J. B. Dunlop invented?

  1. Pneumatic rubber tire

  2. Automobile wheel rim

  3. Rubber boot

  4. Model airplanes
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A Correct answer
Explanation

John Boyd Dunlop, a Scottish veterinarian, invented the pneumatic (air-filled) rubber tire in 1888. He developed it for his son's tricycle to provide a more comfortable ride, and this invention revolutionized transportation by reducing vibration and improving comfort. The other options - automobile wheel rim, rubber boot, and model airplanes - were not Dunlop's inventions.

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