Note: the author of this passage considers civilization, or "civilized life," to be a direct result of agriculture.

"civilized life is secure life. at the most basic level this means security from the sudden destruction that village communities might suffer. civilized life gives the feeling of permanence. it offers regularity, stability, order, even routine. plans can be made. expectations can be realized. people can be expected to act predictably, according to the rules.
the first cities were able to attain stability with walls that shielded the inhabitants from nomads and armies, with the first codes of law that defined human relationships, with police and officials that enforced the laws, and with institutions that functioned beyond the lives of their particular members. city life offered considerably more permanence and security than village life".

which of the following periods would correspond least to the author's description?
(a) paleolithic period
(b) bronze age
(c) iron age

What is meant by a symmetrical unimodal distribution? a. a distribution is the frequency at which a certain value of a variable is obtained during a study. a symmetric unimodal distribution is a distribution where there is one value with a larger frequency than any other and the pattern of frequencies on the left and right of this larger frequency are mirror images of each other. b. a distribution is a pattern of frequencies for the various values of a variable collected in a study. a symmetric unimodal distribution is a distribution where there is one value with a larger frequency than any other and the pattern of frequencies on the left and right of this larger frequency are mirror images of each other. c. a distribution is the frequency at which a certain value of a variable is obtained during a study. a symmetric unimodal distribution is a distribution where there is a uniform frequency, meaning the frequency of every value is same, and the pattern of frequencies on the left and right of this larger frequency are mirror images of each other.