Draw conclusions:
why do you think pinard sat down and wept after chipping pieces off the berlin wall? explain what the wall meant to pinard and the people who gathered around him to clap.

i also think it is c

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: