Garofalo: It's often stated that the roots of Rock and Roll can be traced back to the equation of "Rhythm and Blues'' + "Country and Western.'' However, that equation is too simplistic. If we accept the view of writer George Lipsitz, who states that all of the musical roots of Rock and Roll come from "the intersection of urbanization, multiculturalism, and class,'' we find that there is a socio-economic common denominator that includes many different kinds of musical influences. What is that common denominator?

b. the traditions of popular working-class styles.

Explanation:

According to a different source, these are the options that come with this question:

a. the traditions of European art music styles.

b. the traditions of popular working-class styles.

c. the traditions of sacred music as opposed to secular music.

In this text, we learn that the author believes that all the musical roots of rock and roll come from an intersection of urbanization, multiculturalism and class. The processes of urbanization and multiculturalism often take place within a small group of people. This is generally the working class of cities. Moreover, the working class people of the cities are also the ones who have traditionally enjoyed music such as blues, country, western and rock and roll. Therefore, it seems likely that the common socio-economic denominator is that of the traditions of popular working-class styles.