Answer:
The correct answer is B. the traffic light.
Explanation:
1. The most important invention of Garrett Augustus Morgan was the traffic light. More and more cars shared the roads with carriages and bicycles. One day Morgan saw an accident between a car and a horse cart in which a girl was seriously injured. Then there was a mechanism to yield the step operated by a policeman. It was expensive in labor, did not allow complete stops and assumed that traffic always moved in one direction or another.
2. He came up with red and green signs combined with a warning bell and got the American Traffic Light Company to install them on August 5, 1914, at the corner of 105th Street and Euclid Avenue, Cleveland. This invention was not patented. Finally, an improved version of Morgan's invention was patented on February 27, 1922.
