The constitutional amendment process requires that 3/4ths of the
states ratify any changes. This ensures that most of the country
must be in favor of a change in order to modify the Constitution.
Why do you think that Prohibition, which had been approved by the
people, failed so dramatically?

Only politicians decided.

Explanation:

Prohibition, on paper, sounds like a good idea.  However, when legislators and politicians from many states instituted Prohibition, the American public wasn't quite so quick to follow.  In the long term, the government cannot stand against the might of the people.

I'm going to go with the 4th option

Explanation: They wanted to keep peace and stop a war from breaking out

Hope this helps :)