Why did the development of time zones make train schedules more reliable? Time zones set the entire country to the same time. Time zones measured time locally instead of country-wide. Time zones made sure that each state was in only one zone. Time zones created a standard of time that all trains followed.

The development of time zones makes train schedules more reliable, as all the trains follow a standard time zone. Thus, option D is correct.

What are time zones?

Time zones can be defined as a particular time that is applied to a particular area or a zone, as the time of sun appearance is different in each time zone. there are 27 time zones, and some of them are:

Atlantic Standard Time (AST),
Eastern Standard Time (EST),
Central Standard Time (CST),
Mountain Standard Time (MST),
Pacific Standard Time (PST),
Alaskan Standard Time (AKST)

As the train would travel from a different location at a different time i.e., if the train traveled from Mumbai at 6 p.m, but that time will be slightly different for the Kolkata people and that used to create havoc and confusion. So, to avoid all that, it was decided to use a standardized time that all the trained need to follow. Therefore, option D is the correct option.

Learn more about time zones, here:

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