One tool under What-If-Analysis is Scenarios. Which best describes the purpose of setting up and using scenarios? O to quickly combine multiple formulas from different cells into just one
O to instantly compare results when data in numerous cells change to specified values
O to conduct automatic complex statistical analysis on a range of cells
O to constrain some cells to certain values so that the wrong data are rejected if entered

option a

explanation:

to cleberate the end of their war

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:

sense of self-interest

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