So-called utopian communities (communities of mostly religious reformers who sought to reorganize society and restore social harmony) derived their name from:

Utopia is originally a Greek term for an imaginary place or society in which everything is absolutely perfect and joyous. Utopian communities were first created in America in the 1840s to serve as a model for the country at large. In Utopian communities individualism, freedom, equality and pursuit of passions was encouraged.  

The answer should be a.