The underlined word in the sentence above can best be defined as
a.

the cultural group that is least accepted within a specific region
b.

the cultural group that is most accepted by the majority of the people
c.

an accepted cultural pattern practiced by a similar group of people
d.

a behavioral pattern that is regularly accepted by a group of people

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation:

we need the answer choices to answer the question