Question

read the text. then, add the best concluding sentence.
garrett morgan was an inventor from cleveland, ohio, who is credited with patenting the first three - signal traffic light in 1923. as an automobile owner, morgan noticed that traffic accidents were a common occurrence at busy intersections. he decided to improve the device used to signal automobile drivers. at that time, traffic signals had only bidirectional \stop\ and \go\ signals. the moment that traffic on one road stopped, traffic from the perpendicular streets was prompted to move. morgan saw the need for a third signal that would temporarily halt traffic in all directions, allowing time for an intersection to clear of cars and pedestrians before the flow of traffic resumed. ____________
with his invention, morgan revolutionized the automobile industry by making cars safer to operate.
with his invention, morgan encouraged drivers to obey traffic laws that were often disregarded.
with his invention, morgan made intersections safer by creating more organized traffic patterns.
with his invention, morgan improved the operation of traffic lights by simplifying their design.

Explanation:

The text focuses on Morgan's invention of the three - signal traffic light to address traffic accident issues at intersections. The key is to find a conclusion that directly relates to the impact on intersections.

• The first option about the automobile industry is too broad as the text is about intersections.
• The second option about traffic laws is not the main focus of the text.
• The fourth option about simplifying design is not mentioned in the text.

The third option about making intersections safer by creating more organized traffic patterns directly ties in with the problem (traffic accidents at intersections) and Morgan's solution (three - signal traffic light).

Answer:

With his invention, Morgan made intersections safer by creating more organized traffic patterns.