Answer:
Interest in organized labor is one of the most common attributes among the working class.
Explanation:
The working class is made up of individuals who occupy the proletariat and those who make up the social strata related to that class, such as those who live by selling and distributing products and services. This class, together with the layers that compose it, has a specific characteristic, within American society, which is the interest for well-organized and well-structured work.