Respuesta :
There were over 300 local sun timings to pick from because every city in the U.S. had a different time standard. As a result, time zones allowing for the complicated geographic reliance to be relaxed.
Correct option is C.
The main purpose of setting 4 time zones in the continental Unite States is that "Railroads needed standardization of time for continental travel."
American and Canadian railroads switch to four continental time zones, which eliminates the complication of dealing with thousands of local times. The daring move reflected the railroad companies' combined power.
To know more about Continental U.S., refer to the link:
https://brainly.com/question/1029372